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linux/drivers/media/video/gspca/ov534.c
Jean-François Moine f7059eaa28 V4L/DVB: gspca - main: Don't use the frame buffer flags 
This patch fixes possible race conditions in queue management with SMP:
when a frame was completed, the irq function tried to use the next frame
buffer. At this time, it was possible that the application on an other
processor updated the frame pointer, making the image to point to a bad
buffer.
The patch contains two main changes:
- the image transfer uses the queue indexes which are protected against
  simultaneous memory access,
- the image pointer which is used for image concatenation is only set at
  interrupt level.
Some subdrivers which used the image pointer have been updated.

Reported-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Jean-François Moine <moinejf@free.fr>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2010-08-02 16:42:48 -03:00

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/*
* ov534-ov772x gspca driver
*
* Copyright (C) 2008 Antonio Ospite <ospite@studenti.unina.it>
* Copyright (C) 2008 Jim Paris <jim@jtan.com>
* Copyright (C) 2009 Jean-Francois Moine http://moinejf.free.fr
*
* Based on a prototype written by Mark Ferrell <majortrips@gmail.com>
* USB protocol reverse engineered by Jim Paris <jim@jtan.com>
* https://jim.sh/svn/jim/devl/playstation/ps3/eye/test/
*
* PS3 Eye camera enhanced by Richard Kaswy http://kaswy.free.fr
* PS3 Eye camera - brightness, contrast, awb, agc, aec controls
* added by Max Thrun <bear24rw@gmail.com>
*
* 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 "ov534"
#include "gspca.h"
#define OV534_REG_ADDRESS 0xf1 /* sensor address */
#define OV534_REG_SUBADDR 0xf2
#define OV534_REG_WRITE 0xf3
#define OV534_REG_READ 0xf4
#define OV534_REG_OPERATION 0xf5
#define OV534_REG_STATUS 0xf6
#define OV534_OP_WRITE_3 0x37
#define OV534_OP_WRITE_2 0x33
#define OV534_OP_READ_2 0xf9
#define CTRL_TIMEOUT 500
MODULE_AUTHOR("Antonio Ospite <ospite@studenti.unina.it>");
MODULE_DESCRIPTION("GSPCA/OV534 USB Camera Driver");
MODULE_LICENSE("GPL");
/* specific webcam descriptor */
struct sd {
struct gspca_dev gspca_dev; /* !! must be the first item */
__u32 last_pts;
u16 last_fid;
u8 frame_rate;
u8 brightness;
u8 contrast;
u8 gain;
u8 exposure;
u8 agc;
u8 awb;
u8 aec;
s8 sharpness;
u8 hflip;
u8 vflip;
u8 freqfltr;
};
/* V4L2 controls supported by the driver */
static int sd_setgain(struct gspca_dev *gspca_dev, __s32 val);
static int sd_getgain(struct gspca_dev *gspca_dev, __s32 *val);
static int sd_setexposure(struct gspca_dev *gspca_dev, __s32 val);
static int sd_getexposure(struct gspca_dev *gspca_dev, __s32 *val);
static int sd_setagc(struct gspca_dev *gspca_dev, __s32 val);
static int sd_getagc(struct gspca_dev *gspca_dev, __s32 *val);
static int sd_setsharpness(struct gspca_dev *gspca_dev, __s32 val);
static int sd_getsharpness(struct gspca_dev *gspca_dev, __s32 *val);
static int sd_sethflip(struct gspca_dev *gspca_dev, __s32 val);
static int sd_gethflip(struct gspca_dev *gspca_dev, __s32 *val);
static int sd_setvflip(struct gspca_dev *gspca_dev, __s32 val);
static int sd_getvflip(struct gspca_dev *gspca_dev, __s32 *val);
static int sd_setawb(struct gspca_dev *gspca_dev, __s32 val);
static int sd_getawb(struct gspca_dev *gspca_dev, __s32 *val);
static int sd_setaec(struct gspca_dev *gspca_dev, __s32 val);
static int sd_getaec(struct gspca_dev *gspca_dev, __s32 *val);
static int sd_setbrightness(struct gspca_dev *gspca_dev, __s32 val);
static int sd_getbrightness(struct gspca_dev *gspca_dev, __s32 *val);
static int sd_setcontrast(struct gspca_dev *gspca_dev, __s32 val);
static int sd_getcontrast(struct gspca_dev *gspca_dev, __s32 *val);
static int sd_setfreqfltr(struct gspca_dev *gspca_dev, __s32 val);
static int sd_getfreqfltr(struct gspca_dev *gspca_dev, __s32 *val);
static int sd_querymenu(struct gspca_dev *gspca_dev,
struct v4l2_querymenu *menu);
static const struct ctrl sd_ctrls[] = {
{ /* 0 */
{
.id = V4L2_CID_BRIGHTNESS,
.type = V4L2_CTRL_TYPE_INTEGER,
.name = "Brightness",
.minimum = 0,
.maximum = 255,
.step = 1,
#define BRIGHTNESS_DEF 0
.default_value = BRIGHTNESS_DEF,
},
.set = sd_setbrightness,
.get = sd_getbrightness,
},
{ /* 1 */
{
.id = V4L2_CID_CONTRAST,
.type = V4L2_CTRL_TYPE_INTEGER,
.name = "Contrast",
.minimum = 0,
.maximum = 255,
.step = 1,
#define CONTRAST_DEF 32
.default_value = CONTRAST_DEF,
},
.set = sd_setcontrast,
.get = sd_getcontrast,
},
{ /* 2 */
{
.id = V4L2_CID_GAIN,
.type = V4L2_CTRL_TYPE_INTEGER,
.name = "Main Gain",
.minimum = 0,
.maximum = 63,
.step = 1,
#define GAIN_DEF 20
.default_value = GAIN_DEF,
},
.set = sd_setgain,
.get = sd_getgain,
},
{ /* 3 */
{
.id = V4L2_CID_EXPOSURE,
.type = V4L2_CTRL_TYPE_INTEGER,
.name = "Exposure",
.minimum = 0,
.maximum = 255,
.step = 1,
#define EXPO_DEF 120
.default_value = EXPO_DEF,
},
.set = sd_setexposure,
.get = sd_getexposure,
},
{ /* 4 */
{
.id = V4L2_CID_AUTOGAIN,
.type = V4L2_CTRL_TYPE_BOOLEAN,
.name = "Auto Gain",
.minimum = 0,
.maximum = 1,
.step = 1,
#define AGC_DEF 1
.default_value = AGC_DEF,
},
.set = sd_setagc,
.get = sd_getagc,
},
#define AWB_IDX 5
{ /* 5 */
{
.id = V4L2_CID_AUTO_WHITE_BALANCE,
.type = V4L2_CTRL_TYPE_BOOLEAN,
.name = "Auto White Balance",
.minimum = 0,
.maximum = 1,
.step = 1,
#define AWB_DEF 1
.default_value = AWB_DEF,
},
.set = sd_setawb,
.get = sd_getawb,
},
{ /* 6 */
{
.id = V4L2_CID_EXPOSURE_AUTO,
.type = V4L2_CTRL_TYPE_BOOLEAN,
.name = "Auto Exposure",
.minimum = 0,
.maximum = 1,
.step = 1,
#define AEC_DEF 1
.default_value = AEC_DEF,
},
.set = sd_setaec,
.get = sd_getaec,
},
{ /* 7 */
{
.id = V4L2_CID_SHARPNESS,
.type = V4L2_CTRL_TYPE_INTEGER,
.name = "Sharpness",
.minimum = 0,
.maximum = 63,
.step = 1,
#define SHARPNESS_DEF 0
.default_value = SHARPNESS_DEF,
},
.set = sd_setsharpness,
.get = sd_getsharpness,
},
{ /* 8 */
{
.id = V4L2_CID_HFLIP,
.type = V4L2_CTRL_TYPE_BOOLEAN,
.name = "HFlip",
.minimum = 0,
.maximum = 1,
.step = 1,
#define HFLIP_DEF 0
.default_value = HFLIP_DEF,
},
.set = sd_sethflip,
.get = sd_gethflip,
},
{ /* 9 */
{
.id = V4L2_CID_VFLIP,
.type = V4L2_CTRL_TYPE_BOOLEAN,
.name = "VFlip",
.minimum = 0,
.maximum = 1,
.step = 1,
#define VFLIP_DEF 0
.default_value = VFLIP_DEF,
},
.set = sd_setvflip,
.get = sd_getvflip,
},
{ /* 10 */
{
.id = V4L2_CID_POWER_LINE_FREQUENCY,
.type = V4L2_CTRL_TYPE_MENU,
.name = "Light Frequency Filter",
.minimum = 0,
.maximum = 1,
.step = 1,
#define FREQFLTR_DEF 0
.default_value = FREQFLTR_DEF,
},
.set = sd_setfreqfltr,
.get = sd_getfreqfltr,
},
};
static const struct v4l2_pix_format ov772x_mode[] = {
{320, 240, V4L2_PIX_FMT_YUYV, V4L2_FIELD_NONE,
.bytesperline = 320 * 2,
.sizeimage = 320 * 240 * 2,
.colorspace = V4L2_COLORSPACE_SRGB,
.priv = 1},
{640, 480, V4L2_PIX_FMT_YUYV, V4L2_FIELD_NONE,
.bytesperline = 640 * 2,
.sizeimage = 640 * 480 * 2,
.colorspace = V4L2_COLORSPACE_SRGB,
.priv = 0},
};
static const u8 qvga_rates[] = {125, 100, 75, 60, 50, 40, 30};
static const u8 vga_rates[] = {60, 50, 40, 30, 15};
static const struct framerates ov772x_framerates[] = {
{ /* 320x240 */
.rates = qvga_rates,
.nrates = ARRAY_SIZE(qvga_rates),
},
{ /* 640x480 */
.rates = vga_rates,
.nrates = ARRAY_SIZE(vga_rates),
},
};
static const u8 bridge_init[][2] = {
{ 0xc2, 0x0c },
{ 0x88, 0xf8 },
{ 0xc3, 0x69 },
{ 0x89, 0xff },
{ 0x76, 0x03 },
{ 0x92, 0x01 },
{ 0x93, 0x18 },
{ 0x94, 0x10 },
{ 0x95, 0x10 },
{ 0xe2, 0x00 },
{ 0xe7, 0x3e },
{ 0x96, 0x00 },
{ 0x97, 0x20 },
{ 0x97, 0x20 },
{ 0x97, 0x20 },
{ 0x97, 0x0a },
{ 0x97, 0x3f },
{ 0x97, 0x4a },
{ 0x97, 0x20 },
{ 0x97, 0x15 },
{ 0x97, 0x0b },
{ 0x8e, 0x40 },
{ 0x1f, 0x81 },
{ 0x34, 0x05 },
{ 0xe3, 0x04 },
{ 0x88, 0x00 },
{ 0x89, 0x00 },
{ 0x76, 0x00 },
{ 0xe7, 0x2e },
{ 0x31, 0xf9 },
{ 0x25, 0x42 },
{ 0x21, 0xf0 },
{ 0x1c, 0x00 },
{ 0x1d, 0x40 },
{ 0x1d, 0x02 }, /* payload size 0x0200 * 4 = 2048 bytes */
{ 0x1d, 0x00 }, /* payload size */
{ 0x1d, 0x02 }, /* frame size 0x025800 * 4 = 614400 */
{ 0x1d, 0x58 }, /* frame size */
{ 0x1d, 0x00 }, /* frame size */
{ 0x1c, 0x0a },
{ 0x1d, 0x08 }, /* turn on UVC header */
{ 0x1d, 0x0e }, /* .. */
{ 0x8d, 0x1c },
{ 0x8e, 0x80 },
{ 0xe5, 0x04 },
{ 0xc0, 0x50 },
{ 0xc1, 0x3c },
{ 0xc2, 0x0c },
};
static const u8 sensor_init[][2] = {
{ 0x12, 0x80 },
{ 0x11, 0x01 },
/*fixme: better have a delay?*/
{ 0x11, 0x01 },
{ 0x11, 0x01 },
{ 0x11, 0x01 },
{ 0x11, 0x01 },
{ 0x11, 0x01 },
{ 0x11, 0x01 },
{ 0x11, 0x01 },
{ 0x11, 0x01 },
{ 0x11, 0x01 },
{ 0x11, 0x01 },
{ 0x3d, 0x03 },
{ 0x17, 0x26 },
{ 0x18, 0xa0 },
{ 0x19, 0x07 },
{ 0x1a, 0xf0 },
{ 0x32, 0x00 },
{ 0x29, 0xa0 },
{ 0x2c, 0xf0 },
{ 0x65, 0x20 },
{ 0x11, 0x01 },
{ 0x42, 0x7f },
{ 0x63, 0xaa }, /* AWB - was e0 */
{ 0x64, 0xff },
{ 0x66, 0x00 },
{ 0x13, 0xf0 }, /* com8 */
{ 0x0d, 0x41 },
{ 0x0f, 0xc5 },
{ 0x14, 0x11 },
{ 0x22, 0x7f },
{ 0x23, 0x03 },
{ 0x24, 0x40 },
{ 0x25, 0x30 },
{ 0x26, 0xa1 },
{ 0x2a, 0x00 },
{ 0x2b, 0x00 },
{ 0x6b, 0xaa },
{ 0x13, 0xff }, /* AWB */
{ 0x90, 0x05 },
{ 0x91, 0x01 },
{ 0x92, 0x03 },
{ 0x93, 0x00 },
{ 0x94, 0x60 },
{ 0x95, 0x3c },
{ 0x96, 0x24 },
{ 0x97, 0x1e },
{ 0x98, 0x62 },
{ 0x99, 0x80 },
{ 0x9a, 0x1e },
{ 0x9b, 0x08 },
{ 0x9c, 0x20 },
{ 0x9e, 0x81 },
{ 0xa6, 0x04 },
{ 0x7e, 0x0c },
{ 0x7f, 0x16 },
{ 0x80, 0x2a },
{ 0x81, 0x4e },
{ 0x82, 0x61 },
{ 0x83, 0x6f },
{ 0x84, 0x7b },
{ 0x85, 0x86 },
{ 0x86, 0x8e },
{ 0x87, 0x97 },
{ 0x88, 0xa4 },
{ 0x89, 0xaf },
{ 0x8a, 0xc5 },
{ 0x8b, 0xd7 },
{ 0x8c, 0xe8 },
{ 0x8d, 0x20 },
{ 0x0c, 0x90 },
{ 0x2b, 0x00 },
{ 0x22, 0x7f },
{ 0x23, 0x03 },
{ 0x11, 0x01 },
{ 0x0c, 0xd0 },
{ 0x64, 0xff },
{ 0x0d, 0x41 },
{ 0x14, 0x41 },
{ 0x0e, 0xcd },
{ 0xac, 0xbf },
{ 0x8e, 0x00 }, /* De-noise threshold */
{ 0x0c, 0xd0 }
};
static const u8 bridge_start_vga[][2] = {
{0x1c, 0x00},
{0x1d, 0x40},
{0x1d, 0x02},
{0x1d, 0x00},
{0x1d, 0x02},
{0x1d, 0x58},
{0x1d, 0x00},
{0xc0, 0x50},
{0xc1, 0x3c},
};
static const u8 sensor_start_vga[][2] = {
{0x12, 0x00},
{0x17, 0x26},
{0x18, 0xa0},
{0x19, 0x07},
{0x1a, 0xf0},
{0x29, 0xa0},
{0x2c, 0xf0},
{0x65, 0x20},
};
static const u8 bridge_start_qvga[][2] = {
{0x1c, 0x00},
{0x1d, 0x40},
{0x1d, 0x02},
{0x1d, 0x00},
{0x1d, 0x01},
{0x1d, 0x4b},
{0x1d, 0x00},
{0xc0, 0x28},
{0xc1, 0x1e},
};
static const u8 sensor_start_qvga[][2] = {
{0x12, 0x40},
{0x17, 0x3f},
{0x18, 0x50},
{0x19, 0x03},
{0x1a, 0x78},
{0x29, 0x50},
{0x2c, 0x78},
{0x65, 0x2f},
};
static void ov534_reg_write(struct gspca_dev *gspca_dev, u16 reg, u8 val)
{
struct usb_device *udev = gspca_dev->dev;
int ret;
PDEBUG(D_USBO, "reg=0x%04x, val=0%02x", reg, val);
gspca_dev->usb_buf[0] = val;
ret = usb_control_msg(udev,
usb_sndctrlpipe(udev, 0),
0x01,
USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
0x00, reg, gspca_dev->usb_buf, 1, CTRL_TIMEOUT);
if (ret < 0)
PDEBUG(D_ERR, "write failed");
}
static u8 ov534_reg_read(struct gspca_dev *gspca_dev, u16 reg)
{
struct usb_device *udev = gspca_dev->dev;
int ret;
ret = usb_control_msg(udev,
usb_rcvctrlpipe(udev, 0),
0x01,
USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
0x00, reg, gspca_dev->usb_buf, 1, CTRL_TIMEOUT);
PDEBUG(D_USBI, "reg=0x%04x, data=0x%02x", reg, gspca_dev->usb_buf[0]);
if (ret < 0)
PDEBUG(D_ERR, "read failed");
return gspca_dev->usb_buf[0];
}
/* Two bits control LED: 0x21 bit 7 and 0x23 bit 7.
* (direction and output)? */
static void ov534_set_led(struct gspca_dev *gspca_dev, int status)
{
u8 data;
PDEBUG(D_CONF, "led status: %d", status);
data = ov534_reg_read(gspca_dev, 0x21);
data |= 0x80;
ov534_reg_write(gspca_dev, 0x21, data);
data = ov534_reg_read(gspca_dev, 0x23);
if (status)
data |= 0x80;
else
data &= ~0x80;
ov534_reg_write(gspca_dev, 0x23, data);
if (!status) {
data = ov534_reg_read(gspca_dev, 0x21);
data &= ~0x80;
ov534_reg_write(gspca_dev, 0x21, data);
}
}
static int sccb_check_status(struct gspca_dev *gspca_dev)
{
u8 data;
int i;
for (i = 0; i < 5; i++) {
data = ov534_reg_read(gspca_dev, OV534_REG_STATUS);
switch (data) {
case 0x00:
return 1;
case 0x04:
return 0;
case 0x03:
break;
default:
PDEBUG(D_ERR, "sccb status 0x%02x, attempt %d/5",
data, i + 1);
}
}
return 0;
}
static void sccb_reg_write(struct gspca_dev *gspca_dev, u8 reg, u8 val)
{
PDEBUG(D_USBO, "reg: 0x%02x, val: 0x%02x", reg, val);
ov534_reg_write(gspca_dev, OV534_REG_SUBADDR, reg);
ov534_reg_write(gspca_dev, OV534_REG_WRITE, val);
ov534_reg_write(gspca_dev, OV534_REG_OPERATION, OV534_OP_WRITE_3);
if (!sccb_check_status(gspca_dev))
PDEBUG(D_ERR, "sccb_reg_write failed");
}
static u8 sccb_reg_read(struct gspca_dev *gspca_dev, u16 reg)
{
ov534_reg_write(gspca_dev, OV534_REG_SUBADDR, reg);
ov534_reg_write(gspca_dev, OV534_REG_OPERATION, OV534_OP_WRITE_2);
if (!sccb_check_status(gspca_dev))
PDEBUG(D_ERR, "sccb_reg_read failed 1");
ov534_reg_write(gspca_dev, OV534_REG_OPERATION, OV534_OP_READ_2);
if (!sccb_check_status(gspca_dev))
PDEBUG(D_ERR, "sccb_reg_read failed 2");
return ov534_reg_read(gspca_dev, OV534_REG_READ);
}
/* output a bridge sequence (reg - val) */
static void reg_w_array(struct gspca_dev *gspca_dev,
const u8 (*data)[2], int len)
{
while (--len >= 0) {
ov534_reg_write(gspca_dev, (*data)[0], (*data)[1]);
data++;
}
}
/* output a sensor sequence (reg - val) */
static void sccb_w_array(struct gspca_dev *gspca_dev,
const u8 (*data)[2], int len)
{
while (--len >= 0) {
if ((*data)[0] != 0xff) {
sccb_reg_write(gspca_dev, (*data)[0], (*data)[1]);
} else {
sccb_reg_read(gspca_dev, (*data)[1]);
sccb_reg_write(gspca_dev, 0xff, 0x00);
}
data++;
}
}
/* ov772x specific controls */
static void set_frame_rate(struct gspca_dev *gspca_dev)
{
struct sd *sd = (struct sd *) gspca_dev;
int i;
struct rate_s {
u8 fps;
u8 r11;
u8 r0d;
u8 re5;
};
const struct rate_s *r;
static const struct rate_s rate_0[] = { /* 640x480 */
{60, 0x01, 0xc1, 0x04},
{50, 0x01, 0x41, 0x02},
{40, 0x02, 0xc1, 0x04},
{30, 0x04, 0x81, 0x02},
{15, 0x03, 0x41, 0x04},
};
static const struct rate_s rate_1[] = { /* 320x240 */
{125, 0x02, 0x81, 0x02},
{100, 0x02, 0xc1, 0x04},
{75, 0x03, 0xc1, 0x04},
{60, 0x04, 0xc1, 0x04},
{50, 0x02, 0x41, 0x04},
{40, 0x03, 0x41, 0x04},
{30, 0x04, 0x41, 0x04},
};
if (gspca_dev->cam.cam_mode[gspca_dev->curr_mode].priv == 0) {
r = rate_0;
i = ARRAY_SIZE(rate_0);
} else {
r = rate_1;
i = ARRAY_SIZE(rate_1);
}
while (--i > 0) {
if (sd->frame_rate >= r->fps)
break;
r++;
}
sccb_reg_write(gspca_dev, 0x11, r->r11);
sccb_reg_write(gspca_dev, 0x0d, r->r0d);
ov534_reg_write(gspca_dev, 0xe5, r->re5);
PDEBUG(D_PROBE, "frame_rate: %d", r->fps);
}
static void setbrightness(struct gspca_dev *gspca_dev)
{
struct sd *sd = (struct sd *) gspca_dev;
sccb_reg_write(gspca_dev, 0x9b, sd->brightness);
}
static void setcontrast(struct gspca_dev *gspca_dev)
{
struct sd *sd = (struct sd *) gspca_dev;
sccb_reg_write(gspca_dev, 0x9c, sd->contrast);
}
static void setgain(struct gspca_dev *gspca_dev)
{
struct sd *sd = (struct sd *) gspca_dev;
u8 val;
if (sd->agc)
return;
val = sd->gain;
switch (val & 0x30) {
case 0x00:
val &= 0x0f;
break;
case 0x10:
val &= 0x0f;
val |= 0x30;
break;
case 0x20:
val &= 0x0f;
val |= 0x70;
break;
default:
/* case 0x30: */
val &= 0x0f;
val |= 0xf0;
break;
}
sccb_reg_write(gspca_dev, 0x00, val);
}
static void setexposure(struct gspca_dev *gspca_dev)
{
struct sd *sd = (struct sd *) gspca_dev;
u8 val;
if (sd->aec)
return;
/* 'val' is one byte and represents half of the exposure value we are
* going to set into registers, a two bytes value:
*
* MSB: ((u16) val << 1) >> 8 == val >> 7
* LSB: ((u16) val << 1) & 0xff == val << 1
*/
val = sd->exposure;
sccb_reg_write(gspca_dev, 0x08, val >> 7);
sccb_reg_write(gspca_dev, 0x10, val << 1);
}
static void setagc(struct gspca_dev *gspca_dev)
{
struct sd *sd = (struct sd *) gspca_dev;
if (sd->agc) {
sccb_reg_write(gspca_dev, 0x13,
sccb_reg_read(gspca_dev, 0x13) | 0x04);
sccb_reg_write(gspca_dev, 0x64,
sccb_reg_read(gspca_dev, 0x64) | 0x03);
} else {
sccb_reg_write(gspca_dev, 0x13,
sccb_reg_read(gspca_dev, 0x13) & ~0x04);
sccb_reg_write(gspca_dev, 0x64,
sccb_reg_read(gspca_dev, 0x64) & ~0x03);
setgain(gspca_dev);
}
}
static void setawb(struct gspca_dev *gspca_dev)
{
struct sd *sd = (struct sd *) gspca_dev;
if (sd->awb) {
sccb_reg_write(gspca_dev, 0x13,
sccb_reg_read(gspca_dev, 0x13) | 0x02);
sccb_reg_write(gspca_dev, 0x63,
sccb_reg_read(gspca_dev, 0x63) | 0xc0);
} else {
sccb_reg_write(gspca_dev, 0x13,
sccb_reg_read(gspca_dev, 0x13) & ~0x02);
sccb_reg_write(gspca_dev, 0x63,
sccb_reg_read(gspca_dev, 0x63) & ~0xc0);
}
}
static void setaec(struct gspca_dev *gspca_dev)
{
struct sd *sd = (struct sd *) gspca_dev;
if (sd->aec)
sccb_reg_write(gspca_dev, 0x13,
sccb_reg_read(gspca_dev, 0x13) | 0x01);
else {
sccb_reg_write(gspca_dev, 0x13,
sccb_reg_read(gspca_dev, 0x13) & ~0x01);
setexposure(gspca_dev);
}
}
static void setsharpness(struct gspca_dev *gspca_dev)
{
struct sd *sd = (struct sd *) gspca_dev;
u8 val;
val = sd->sharpness;
sccb_reg_write(gspca_dev, 0x91, val); /* Auto de-noise threshold */
sccb_reg_write(gspca_dev, 0x8e, val); /* De-noise threshold */
}
static void sethflip(struct gspca_dev *gspca_dev)
{
struct sd *sd = (struct sd *) gspca_dev;
if (sd->hflip == 0)
sccb_reg_write(gspca_dev, 0x0c,
sccb_reg_read(gspca_dev, 0x0c) | 0x40);
else
sccb_reg_write(gspca_dev, 0x0c,
sccb_reg_read(gspca_dev, 0x0c) & ~0x40);
}
static void setvflip(struct gspca_dev *gspca_dev)
{
struct sd *sd = (struct sd *) gspca_dev;
if (sd->vflip == 0)
sccb_reg_write(gspca_dev, 0x0c,
sccb_reg_read(gspca_dev, 0x0c) | 0x80);
else
sccb_reg_write(gspca_dev, 0x0c,
sccb_reg_read(gspca_dev, 0x0c) & ~0x80);
}
static void setfreqfltr(struct gspca_dev *gspca_dev)
{
struct sd *sd = (struct sd *) gspca_dev;
if (sd->freqfltr == 0)
sccb_reg_write(gspca_dev, 0x2b, 0x00);
else
sccb_reg_write(gspca_dev, 0x2b, 0x9e);
}
/* 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->cam_mode = ov772x_mode;
cam->nmodes = ARRAY_SIZE(ov772x_mode);
cam->mode_framerates = ov772x_framerates;
cam->bulk = 1;
cam->bulk_size = 16384;
cam->bulk_nurbs = 2;
sd->frame_rate = 30;
sd->brightness = BRIGHTNESS_DEF;
sd->contrast = CONTRAST_DEF;
sd->gain = GAIN_DEF;
sd->exposure = EXPO_DEF;
#if AGC_DEF != 0
sd->agc = AGC_DEF;
#else
gspca_dev->ctrl_inac |= (1 << AWB_IDX);
#endif
sd->awb = AWB_DEF;
sd->aec = AEC_DEF;
sd->sharpness = SHARPNESS_DEF;
sd->hflip = HFLIP_DEF;
sd->vflip = VFLIP_DEF;
sd->freqfltr = FREQFLTR_DEF;
return 0;
}
/* this function is called at probe and resume time */
static int sd_init(struct gspca_dev *gspca_dev)
{
u16 sensor_id;
/* reset bridge */
ov534_reg_write(gspca_dev, 0xe7, 0x3a);
ov534_reg_write(gspca_dev, 0xe0, 0x08);
msleep(100);
/* initialize the sensor address */
ov534_reg_write(gspca_dev, OV534_REG_ADDRESS, 0x42);
/* reset sensor */
sccb_reg_write(gspca_dev, 0x12, 0x80);
msleep(10);
/* probe the sensor */
sccb_reg_read(gspca_dev, 0x0a);
sensor_id = sccb_reg_read(gspca_dev, 0x0a) << 8;
sccb_reg_read(gspca_dev, 0x0b);
sensor_id |= sccb_reg_read(gspca_dev, 0x0b);
PDEBUG(D_PROBE, "Sensor ID: %04x", sensor_id);
/* initialize */
reg_w_array(gspca_dev, bridge_init,
ARRAY_SIZE(bridge_init));
ov534_set_led(gspca_dev, 1);
sccb_w_array(gspca_dev, sensor_init,
ARRAY_SIZE(sensor_init));
ov534_reg_write(gspca_dev, 0xe0, 0x09);
ov534_set_led(gspca_dev, 0);
set_frame_rate(gspca_dev);
return 0;
}
static int sd_start(struct gspca_dev *gspca_dev)
{
int mode;
mode = gspca_dev->cam.cam_mode[gspca_dev->curr_mode].priv;
if (mode != 0) { /* 320x240 */
reg_w_array(gspca_dev, bridge_start_qvga,
ARRAY_SIZE(bridge_start_qvga));
sccb_w_array(gspca_dev, sensor_start_qvga,
ARRAY_SIZE(sensor_start_qvga));
} else { /* 640x480 */
reg_w_array(gspca_dev, bridge_start_vga,
ARRAY_SIZE(bridge_start_vga));
sccb_w_array(gspca_dev, sensor_start_vga,
ARRAY_SIZE(sensor_start_vga));
}
set_frame_rate(gspca_dev);
setagc(gspca_dev);
setawb(gspca_dev);
setaec(gspca_dev);
setgain(gspca_dev);
setexposure(gspca_dev);
setbrightness(gspca_dev);
setcontrast(gspca_dev);
setsharpness(gspca_dev);
setvflip(gspca_dev);
sethflip(gspca_dev);
setfreqfltr(gspca_dev);
ov534_set_led(gspca_dev, 1);
ov534_reg_write(gspca_dev, 0xe0, 0x00);
return 0;
}
static void sd_stopN(struct gspca_dev *gspca_dev)
{
ov534_reg_write(gspca_dev, 0xe0, 0x09);
ov534_set_led(gspca_dev, 0);
}
/* Values for bmHeaderInfo (Video and Still Image Payload Headers, 2.4.3.3) */
#define UVC_STREAM_EOH (1 << 7)
#define UVC_STREAM_ERR (1 << 6)
#define UVC_STREAM_STI (1 << 5)
#define UVC_STREAM_RES (1 << 4)
#define UVC_STREAM_SCR (1 << 3)
#define UVC_STREAM_PTS (1 << 2)
#define UVC_STREAM_EOF (1 << 1)
#define UVC_STREAM_FID (1 << 0)
static void sd_pkt_scan(struct gspca_dev *gspca_dev,
u8 *data, int len)
{
struct sd *sd = (struct sd *) gspca_dev;
__u32 this_pts;
u16 this_fid;
int remaining_len = len;
do {
len = min(remaining_len, 2048);
/* Payloads are prefixed with a UVC-style header. We
consider a frame to start when the FID toggles, or the PTS
changes. A frame ends when EOF is set, and we've received
the correct number of bytes. */
/* Verify UVC header. Header length is always 12 */
if (data[0] != 12 || len < 12) {
PDEBUG(D_PACK, "bad header");
goto discard;
}
/* Check errors */
if (data[1] & UVC_STREAM_ERR) {
PDEBUG(D_PACK, "payload error");
goto discard;
}
/* Extract PTS and FID */
if (!(data[1] & UVC_STREAM_PTS)) {
PDEBUG(D_PACK, "PTS not present");
goto discard;
}
this_pts = (data[5] << 24) | (data[4] << 16)
| (data[3] << 8) | data[2];
this_fid = (data[1] & UVC_STREAM_FID) ? 1 : 0;
/* If PTS or FID has changed, start a new frame. */
if (this_pts != sd->last_pts || this_fid != sd->last_fid) {
if (gspca_dev->last_packet_type == INTER_PACKET)
gspca_frame_add(gspca_dev, LAST_PACKET,
NULL, 0);
sd->last_pts = this_pts;
sd->last_fid = this_fid;
gspca_frame_add(gspca_dev, FIRST_PACKET,
data + 12, len - 12);
/* If this packet is marked as EOF, end the frame */
} else if (data[1] & UVC_STREAM_EOF) {
sd->last_pts = 0;
if (gspca_dev->image_len + len - 12 !=
gspca_dev->width * gspca_dev->height * 2) {
PDEBUG(D_PACK, "wrong sized frame");
goto discard;
}
gspca_frame_add(gspca_dev, LAST_PACKET,
data + 12, len - 12);
} else {
/* Add the data from this payload */
gspca_frame_add(gspca_dev, INTER_PACKET,
data + 12, len - 12);
}
/* Done this payload */
goto scan_next;
discard:
/* Discard data until a new frame starts. */
gspca_dev->last_packet_type = DISCARD_PACKET;
scan_next:
remaining_len -= len;
data += len;
} while (remaining_len > 0);
}
/* controls */
static int sd_setgain(struct gspca_dev *gspca_dev, __s32 val)
{
struct sd *sd = (struct sd *) gspca_dev;
sd->gain = val;
if (gspca_dev->streaming)
setgain(gspca_dev);
return 0;
}
static int sd_getgain(struct gspca_dev *gspca_dev, __s32 *val)
{
struct sd *sd = (struct sd *) gspca_dev;
*val = sd->gain;
return 0;
}
static int sd_setexposure(struct gspca_dev *gspca_dev, __s32 val)
{
struct sd *sd = (struct sd *) gspca_dev;
sd->exposure = val;
if (gspca_dev->streaming)
setexposure(gspca_dev);
return 0;
}
static int sd_getexposure(struct gspca_dev *gspca_dev, __s32 *val)
{
struct sd *sd = (struct sd *) gspca_dev;
*val = sd->exposure;
return 0;
}
static int sd_setbrightness(struct gspca_dev *gspca_dev, __s32 val)
{
struct sd *sd = (struct sd *) gspca_dev;
sd->brightness = val;
if (gspca_dev->streaming)
setbrightness(gspca_dev);
return 0;
}
static int sd_getbrightness(struct gspca_dev *gspca_dev, __s32 *val)
{
struct sd *sd = (struct sd *) gspca_dev;
*val = sd->brightness;
return 0;
}
static int sd_setcontrast(struct gspca_dev *gspca_dev, __s32 val)
{
struct sd *sd = (struct sd *) gspca_dev;
sd->contrast = val;
if (gspca_dev->streaming)
setcontrast(gspca_dev);
return 0;
}
static int sd_getcontrast(struct gspca_dev *gspca_dev, __s32 *val)
{
struct sd *sd = (struct sd *) gspca_dev;
*val = sd->contrast;
return 0;
}
static int sd_setagc(struct gspca_dev *gspca_dev, __s32 val)
{
struct sd *sd = (struct sd *) gspca_dev;
sd->agc = val;
if (gspca_dev->streaming) {
/* the auto white balance control works only
* when auto gain is set */
if (val)
gspca_dev->ctrl_inac &= ~(1 << AWB_IDX);
else
gspca_dev->ctrl_inac |= (1 << AWB_IDX);
setagc(gspca_dev);
}
return 0;
}
static int sd_getagc(struct gspca_dev *gspca_dev, __s32 *val)
{
struct sd *sd = (struct sd *) gspca_dev;
*val = sd->agc;
return 0;
}
static int sd_setawb(struct gspca_dev *gspca_dev, __s32 val)
{
struct sd *sd = (struct sd *) gspca_dev;
sd->awb = val;
if (gspca_dev->streaming)
setawb(gspca_dev);
return 0;
}
static int sd_getawb(struct gspca_dev *gspca_dev, __s32 *val)
{
struct sd *sd = (struct sd *) gspca_dev;
*val = sd->awb;
return 0;
}
static int sd_setaec(struct gspca_dev *gspca_dev, __s32 val)
{
struct sd *sd = (struct sd *) gspca_dev;
sd->aec = val;
if (gspca_dev->streaming)
setaec(gspca_dev);
return 0;
}
static int sd_getaec(struct gspca_dev *gspca_dev, __s32 *val)
{
struct sd *sd = (struct sd *) gspca_dev;
*val = sd->aec;
return 0;
}
static int sd_setsharpness(struct gspca_dev *gspca_dev, __s32 val)
{
struct sd *sd = (struct sd *) gspca_dev;
sd->sharpness = val;
if (gspca_dev->streaming)
setsharpness(gspca_dev);
return 0;
}
static int sd_getsharpness(struct gspca_dev *gspca_dev, __s32 *val)
{
struct sd *sd = (struct sd *) gspca_dev;
*val = sd->sharpness;
return 0;
}
static int sd_sethflip(struct gspca_dev *gspca_dev, __s32 val)
{
struct sd *sd = (struct sd *) gspca_dev;
sd->hflip = val;
if (gspca_dev->streaming)
sethflip(gspca_dev);
return 0;
}
static int sd_gethflip(struct gspca_dev *gspca_dev, __s32 *val)
{
struct sd *sd = (struct sd *) gspca_dev;
*val = sd->hflip;
return 0;
}
static int sd_setvflip(struct gspca_dev *gspca_dev, __s32 val)
{
struct sd *sd = (struct sd *) gspca_dev;
sd->vflip = val;
if (gspca_dev->streaming)
setvflip(gspca_dev);
return 0;
}
static int sd_getvflip(struct gspca_dev *gspca_dev, __s32 *val)
{
struct sd *sd = (struct sd *) gspca_dev;
*val = sd->vflip;
return 0;
}
static int sd_setfreqfltr(struct gspca_dev *gspca_dev, __s32 val)
{
struct sd *sd = (struct sd *) gspca_dev;
sd->freqfltr = val;
if (gspca_dev->streaming)
setfreqfltr(gspca_dev);
return 0;
}
static int sd_getfreqfltr(struct gspca_dev *gspca_dev, __s32 *val)
{
struct sd *sd = (struct sd *) gspca_dev;
*val = sd->freqfltr;
return 0;
}
static int sd_querymenu(struct gspca_dev *gspca_dev,
struct v4l2_querymenu *menu)
{
switch (menu->id) {
case V4L2_CID_POWER_LINE_FREQUENCY:
switch (menu->index) {
case 0: /* V4L2_CID_POWER_LINE_FREQUENCY_DISABLED */
strcpy((char *) menu->name, "Disabled");
return 0;
case 1: /* V4L2_CID_POWER_LINE_FREQUENCY_50HZ */
strcpy((char *) menu->name, "50 Hz");
return 0;
}
break;
}
return -EINVAL;
}
/* get stream parameters (framerate) */
static int sd_get_streamparm(struct gspca_dev *gspca_dev,
struct v4l2_streamparm *parm)
{
struct v4l2_captureparm *cp = &parm->parm.capture;
struct v4l2_fract *tpf = &cp->timeperframe;
struct sd *sd = (struct sd *) gspca_dev;
if (parm->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
return -EINVAL;
cp->capability |= V4L2_CAP_TIMEPERFRAME;
tpf->numerator = 1;
tpf->denominator = sd->frame_rate;
return 0;
}
/* set stream parameters (framerate) */
static int sd_set_streamparm(struct gspca_dev *gspca_dev,
struct v4l2_streamparm *parm)
{
struct v4l2_captureparm *cp = &parm->parm.capture;
struct v4l2_fract *tpf = &cp->timeperframe;
struct sd *sd = (struct sd *) gspca_dev;
if (parm->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
return -EINVAL;
/* Set requested framerate */
sd->frame_rate = tpf->denominator / tpf->numerator;
if (gspca_dev->streaming)
set_frame_rate(gspca_dev);
/* Return the actual framerate */
tpf->numerator = 1;
tpf->denominator = sd->frame_rate;
return 0;
}
/* 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,
.querymenu = sd_querymenu,
.get_streamparm = sd_get_streamparm,
.set_streamparm = sd_set_streamparm,
};
/* -- module initialisation -- */
static const __devinitdata struct usb_device_id device_table[] = {
{USB_DEVICE(0x1415, 0x2000)},
{}
};
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)
{
int ret;
ret = usb_register(&sd_driver);
if (ret < 0)
return ret;
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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