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linux/drivers/media/usb/gspca/ov534.c
Mauro Carvalho Chehab 559addc25b [media] fixp-arith: replace sin/cos table by a better precision one 
The cos table used at fixp-arith.h has only 8 bits of precision.
That causes problems if it is reused on other drivers.

As some media drivers require a higher precision sin/cos
implementation, replace the current implementation by one that
will provide 32 bits precision.

The values generated by the new implementation matches the
32 bit precision of glibc's sin for an angle measured in
integer degrees.

It also provides support for fractional angles via linear
interpolation. On experimental calculus, when used a table
with a 0.001 degree angle, the maximum error for sin is
0.000038, which is likely good enough for practical purposes.

There are some logic there that seems to be specific to the
usage inside ff-memless.c. Move those logic to there, as they're
not needed elsewhere.

Cc: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Signed-off-by: Prashant Laddha <prladdha@cisco.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
2015-03-02 14:50:06 -03:00

1546 lines
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/*
* ov534-ov7xxx 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>
* PS3 Eye camera - FPS range extended by Joseph Howse
* <josephhowse@nummist.com> http://nummist.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 pr_fmt(fmt) KBUILD_MODNAME ": " fmt
#define MODULE_NAME "ov534"
#include "gspca.h"
#include <linux/fixp-arith.h>
#include <media/v4l2-ctrls.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 */
struct v4l2_ctrl_handler ctrl_handler;
struct v4l2_ctrl *hue;
struct v4l2_ctrl *saturation;
struct v4l2_ctrl *brightness;
struct v4l2_ctrl *contrast;
struct { /* gain control cluster */
struct v4l2_ctrl *autogain;
struct v4l2_ctrl *gain;
};
struct v4l2_ctrl *autowhitebalance;
struct { /* exposure control cluster */
struct v4l2_ctrl *autoexposure;
struct v4l2_ctrl *exposure;
};
struct v4l2_ctrl *sharpness;
struct v4l2_ctrl *hflip;
struct v4l2_ctrl *vflip;
struct v4l2_ctrl *plfreq;
__u32 last_pts;
u16 last_fid;
u8 frame_rate;
u8 sensor;
};
enum sensors {
SENSOR_OV767x,
SENSOR_OV772x,
NSENSORS
};
static int sd_start(struct gspca_dev *gspca_dev);
static void sd_stopN(struct gspca_dev *gspca_dev);
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 struct v4l2_pix_format ov767x_mode[] = {
{320, 240, V4L2_PIX_FMT_JPEG, V4L2_FIELD_NONE,
.bytesperline = 320,
.sizeimage = 320 * 240 * 3 / 8 + 590,
.colorspace = V4L2_COLORSPACE_JPEG},
{640, 480, V4L2_PIX_FMT_JPEG, V4L2_FIELD_NONE,
.bytesperline = 640,
.sizeimage = 640 * 480 * 3 / 8 + 590,
.colorspace = V4L2_COLORSPACE_JPEG},
};
static const u8 qvga_rates[] = {187, 150, 137, 125, 100, 75, 60, 50, 37, 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),
},
};
struct reg_array {
const u8 (*val)[2];
int len;
};
static const u8 bridge_init_767x[][2] = {
/* comments from the ms-win file apollo7670.set */
/* str1 */
{0xf1, 0x42},
{0x88, 0xf8},
{0x89, 0xff},
{0x76, 0x03},
{0x92, 0x03},
{0x95, 0x10},
{0xe2, 0x00},
{0xe7, 0x3e},
{0x8d, 0x1c},
{0x8e, 0x00},
{0x8f, 0x00},
{0x1f, 0x00},
{0xc3, 0xf9},
{0x89, 0xff},
{0x88, 0xf8},
{0x76, 0x03},
{0x92, 0x01},
{0x93, 0x18},
{0x1c, 0x00},
{0x1d, 0x48},
{0x1d, 0x00},
{0x1d, 0xff},
{0x1d, 0x02},
{0x1d, 0x58},
{0x1d, 0x00},
{0x1c, 0x0a},
{0x1d, 0x0a},
{0x1d, 0x0e},
{0xc0, 0x50}, /* HSize 640 */
{0xc1, 0x3c}, /* VSize 480 */
{0x34, 0x05}, /* enable Audio Suspend mode */
{0xc2, 0x0c}, /* Input YUV */
{0xc3, 0xf9}, /* enable PRE */
{0x34, 0x05}, /* enable Audio Suspend mode */
{0xe7, 0x2e}, /* this solves failure of "SuspendResumeTest" */
{0x31, 0xf9}, /* enable 1.8V Suspend */
{0x35, 0x02}, /* turn on JPEG */
{0xd9, 0x10},
{0x25, 0x42}, /* GPIO[8]:Input */
{0x94, 0x11}, /* If the default setting is loaded when
* system boots up, this flag is closed here */
};
static const u8 sensor_init_767x[][2] = {
{0x12, 0x80},
{0x11, 0x03},
{0x3a, 0x04},
{0x12, 0x00},
{0x17, 0x13},
{0x18, 0x01},
{0x32, 0xb6},
{0x19, 0x02},
{0x1a, 0x7a},
{0x03, 0x0a},
{0x0c, 0x00},
{0x3e, 0x00},
{0x70, 0x3a},
{0x71, 0x35},
{0x72, 0x11},
{0x73, 0xf0},
{0xa2, 0x02},
{0x7a, 0x2a}, /* set Gamma=1.6 below */
{0x7b, 0x12},
{0x7c, 0x1d},
{0x7d, 0x2d},
{0x7e, 0x45},
{0x7f, 0x50},
{0x80, 0x59},
{0x81, 0x62},
{0x82, 0x6b},
{0x83, 0x73},
{0x84, 0x7b},
{0x85, 0x8a},
{0x86, 0x98},
{0x87, 0xb2},
{0x88, 0xca},
{0x89, 0xe0},
{0x13, 0xe0},
{0x00, 0x00},
{0x10, 0x00},
{0x0d, 0x40},
{0x14, 0x38}, /* gain max 16x */
{0xa5, 0x05},
{0xab, 0x07},
{0x24, 0x95},
{0x25, 0x33},
{0x26, 0xe3},
{0x9f, 0x78},
{0xa0, 0x68},
{0xa1, 0x03},
{0xa6, 0xd8},
{0xa7, 0xd8},
{0xa8, 0xf0},
{0xa9, 0x90},
{0xaa, 0x94},
{0x13, 0xe5},
{0x0e, 0x61},
{0x0f, 0x4b},
{0x16, 0x02},
{0x21, 0x02},
{0x22, 0x91},
{0x29, 0x07},
{0x33, 0x0b},
{0x35, 0x0b},
{0x37, 0x1d},
{0x38, 0x71},
{0x39, 0x2a},
{0x3c, 0x78},
{0x4d, 0x40},
{0x4e, 0x20},
{0x69, 0x00},
{0x6b, 0x4a},
{0x74, 0x10},
{0x8d, 0x4f},
{0x8e, 0x00},
{0x8f, 0x00},
{0x90, 0x00},
{0x91, 0x00},
{0x96, 0x00},
{0x9a, 0x80},
{0xb0, 0x84},
{0xb1, 0x0c},
{0xb2, 0x0e},
{0xb3, 0x82},
{0xb8, 0x0a},
{0x43, 0x0a},
{0x44, 0xf0},
{0x45, 0x34},
{0x46, 0x58},
{0x47, 0x28},
{0x48, 0x3a},
{0x59, 0x88},
{0x5a, 0x88},
{0x5b, 0x44},
{0x5c, 0x67},
{0x5d, 0x49},
{0x5e, 0x0e},
{0x6c, 0x0a},
{0x6d, 0x55},
{0x6e, 0x11},
{0x6f, 0x9f},
{0x6a, 0x40},
{0x01, 0x40},
{0x02, 0x40},
{0x13, 0xe7},
{0x4f, 0x80},
{0x50, 0x80},
{0x51, 0x00},
{0x52, 0x22},
{0x53, 0x5e},
{0x54, 0x80},
{0x58, 0x9e},
{0x41, 0x08},
{0x3f, 0x00},
{0x75, 0x04},
{0x76, 0xe1},
{0x4c, 0x00},
{0x77, 0x01},
{0x3d, 0xc2},
{0x4b, 0x09},
{0xc9, 0x60},
{0x41, 0x38}, /* jfm: auto sharpness + auto de-noise */
{0x56, 0x40},
{0x34, 0x11},
{0x3b, 0xc2},
{0xa4, 0x8a}, /* Night mode trigger point */
{0x96, 0x00},
{0x97, 0x30},
{0x98, 0x20},
{0x99, 0x20},
{0x9a, 0x84},
{0x9b, 0x29},
{0x9c, 0x03},
{0x9d, 0x4c},
{0x9e, 0x3f},
{0x78, 0x04},
{0x79, 0x01},
{0xc8, 0xf0},
{0x79, 0x0f},
{0xc8, 0x00},
{0x79, 0x10},
{0xc8, 0x7e},
{0x79, 0x0a},
{0xc8, 0x80},
{0x79, 0x0b},
{0xc8, 0x01},
{0x79, 0x0c},
{0xc8, 0x0f},
{0x79, 0x0d},
{0xc8, 0x20},
{0x79, 0x09},
{0xc8, 0x80},
{0x79, 0x02},
{0xc8, 0xc0},
{0x79, 0x03},
{0xc8, 0x20},
{0x79, 0x26},
};
static const u8 bridge_start_vga_767x[][2] = {
/* str59 JPG */
{0x94, 0xaa},
{0xf1, 0x42},
{0xe5, 0x04},
{0xc0, 0x50},
{0xc1, 0x3c},
{0xc2, 0x0c},
{0x35, 0x02}, /* turn on JPEG */
{0xd9, 0x10},
{0xda, 0x00}, /* for higher clock rate(30fps) */
{0x34, 0x05}, /* enable Audio Suspend mode */
{0xc3, 0xf9}, /* enable PRE */
{0x8c, 0x00}, /* CIF VSize LSB[2:0] */
{0x8d, 0x1c}, /* output YUV */
/* {0x34, 0x05}, * enable Audio Suspend mode (?) */
{0x50, 0x00}, /* H/V divider=0 */
{0x51, 0xa0}, /* input H=640/4 */
{0x52, 0x3c}, /* input V=480/4 */
{0x53, 0x00}, /* offset X=0 */
{0x54, 0x00}, /* offset Y=0 */
{0x55, 0x00}, /* H/V size[8]=0 */
{0x57, 0x00}, /* H-size[9]=0 */
{0x5c, 0x00}, /* output size[9:8]=0 */
{0x5a, 0xa0}, /* output H=640/4 */
{0x5b, 0x78}, /* output V=480/4 */
{0x1c, 0x0a},
{0x1d, 0x0a},
{0x94, 0x11},
};
static const u8 sensor_start_vga_767x[][2] = {
{0x11, 0x01},
{0x1e, 0x04},
{0x19, 0x02},
{0x1a, 0x7a},
};
static const u8 bridge_start_qvga_767x[][2] = {
/* str86 JPG */
{0x94, 0xaa},
{0xf1, 0x42},
{0xe5, 0x04},
{0xc0, 0x80},
{0xc1, 0x60},
{0xc2, 0x0c},
{0x35, 0x02}, /* turn on JPEG */
{0xd9, 0x10},
{0xc0, 0x50}, /* CIF HSize 640 */
{0xc1, 0x3c}, /* CIF VSize 480 */
{0x8c, 0x00}, /* CIF VSize LSB[2:0] */
{0x8d, 0x1c}, /* output YUV */
{0x34, 0x05}, /* enable Audio Suspend mode */
{0xc2, 0x4c}, /* output YUV and Enable DCW */
{0xc3, 0xf9}, /* enable PRE */
{0x1c, 0x00}, /* indirect addressing */
{0x1d, 0x48}, /* output YUV422 */
{0x50, 0x89}, /* H/V divider=/2; plus DCW AVG */
{0x51, 0xa0}, /* DCW input H=640/4 */
{0x52, 0x78}, /* DCW input V=480/4 */
{0x53, 0x00}, /* offset X=0 */
{0x54, 0x00}, /* offset Y=0 */
{0x55, 0x00}, /* H/V size[8]=0 */
{0x57, 0x00}, /* H-size[9]=0 */
{0x5c, 0x00}, /* DCW output size[9:8]=0 */
{0x5a, 0x50}, /* DCW output H=320/4 */
{0x5b, 0x3c}, /* DCW output V=240/4 */
{0x1c, 0x0a},
{0x1d, 0x0a},
{0x94, 0x11},
};
static const u8 sensor_start_qvga_767x[][2] = {
{0x11, 0x01},
{0x1e, 0x04},
{0x19, 0x02},
{0x1a, 0x7a},
};
static const u8 bridge_init_772x[][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_772x[][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, 0x07 },
{ 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_772x[][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_772x[][2] = {
{0x12, 0x00},
{0x17, 0x26},
{0x18, 0xa0},
{0x19, 0x07},
{0x1a, 0xf0},
{0x29, 0xa0},
{0x2c, 0xf0},
{0x65, 0x20},
};
static const u8 bridge_start_qvga_772x[][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_772x[][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;
if (gspca_dev->usb_err < 0)
return;
PDEBUG(D_USBO, "SET 01 0000 %04x %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) {
pr_err("write failed %d\n", ret);
gspca_dev->usb_err = ret;
}
}
static u8 ov534_reg_read(struct gspca_dev *gspca_dev, u16 reg)
{
struct usb_device *udev = gspca_dev->dev;
int ret;
if (gspca_dev->usb_err < 0)
return 0;
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, "GET 01 0000 %04x %02x", reg, gspca_dev->usb_buf[0]);
if (ret < 0) {
pr_err("read failed %d\n", ret);
gspca_dev->usb_err = ret;
}
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++) {
msleep(10);
data = ov534_reg_read(gspca_dev, OV534_REG_STATUS);
switch (data) {
case 0x00:
return 1;
case 0x04:
return 0;
case 0x03:
break;
default:
PERR("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, "sccb write: %02x %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)) {
pr_err("sccb_reg_write failed\n");
gspca_dev->usb_err = -EIO;
}
}
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))
pr_err("sccb_reg_read failed 1\n");
ov534_reg_write(gspca_dev, OV534_REG_OPERATION, OV534_OP_READ_2);
if (!sccb_check_status(gspca_dev))
pr_err("sccb_reg_read failed 2\n");
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 */
/* {205, 0x01, 0xc1, 0x02}, * 205 FPS: video is partly corrupt */
{187, 0x01, 0x81, 0x02}, /* 187 FPS or below: video is valid */
{150, 0x01, 0xc1, 0x04},
{137, 0x02, 0xc1, 0x02},
{125, 0x02, 0x81, 0x02},
{100, 0x02, 0xc1, 0x04},
{75, 0x03, 0xc1, 0x04},
{60, 0x04, 0xc1, 0x04},
{50, 0x02, 0x41, 0x04},
{37, 0x03, 0x41, 0x04},
{30, 0x04, 0x41, 0x04},
};
if (sd->sensor != SENSOR_OV772x)
return;
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 sethue(struct gspca_dev *gspca_dev, s32 val)
{
struct sd *sd = (struct sd *) gspca_dev;
if (sd->sensor == SENSOR_OV767x) {
/* TBD */
} else {
s16 huesin;
s16 huecos;
/* According to the datasheet the registers expect HUESIN and
* HUECOS to be the result of the trigonometric functions,
* scaled by 0x80.
*
* The 0x7fff here represents the maximum absolute value
* returned byt fixp_sin and fixp_cos, so the scaling will
* consider the result like in the interval [-1.0, 1.0].
*/
huesin = fixp_sin16(val) * 0x80 / 0x7fff;
huecos = fixp_cos16(val) * 0x80 / 0x7fff;
if (huesin < 0) {
sccb_reg_write(gspca_dev, 0xab,
sccb_reg_read(gspca_dev, 0xab) | 0x2);
huesin = -huesin;
} else {
sccb_reg_write(gspca_dev, 0xab,
sccb_reg_read(gspca_dev, 0xab) & ~0x2);
}
sccb_reg_write(gspca_dev, 0xa9, (u8)huecos);
sccb_reg_write(gspca_dev, 0xaa, (u8)huesin);
}
}
static void setsaturation(struct gspca_dev *gspca_dev, s32 val)
{
struct sd *sd = (struct sd *) gspca_dev;
if (sd->sensor == SENSOR_OV767x) {
int i;
static u8 color_tb[][6] = {
{0x42, 0x42, 0x00, 0x11, 0x30, 0x41},
{0x52, 0x52, 0x00, 0x16, 0x3c, 0x52},
{0x66, 0x66, 0x00, 0x1b, 0x4b, 0x66},
{0x80, 0x80, 0x00, 0x22, 0x5e, 0x80},
{0x9a, 0x9a, 0x00, 0x29, 0x71, 0x9a},
{0xb8, 0xb8, 0x00, 0x31, 0x87, 0xb8},
{0xdd, 0xdd, 0x00, 0x3b, 0xa2, 0xdd},
};
for (i = 0; i < ARRAY_SIZE(color_tb[0]); i++)
sccb_reg_write(gspca_dev, 0x4f + i, color_tb[val][i]);
} else {
sccb_reg_write(gspca_dev, 0xa7, val); /* U saturation */
sccb_reg_write(gspca_dev, 0xa8, val); /* V saturation */
}
}
static void setbrightness(struct gspca_dev *gspca_dev, s32 val)
{
struct sd *sd = (struct sd *) gspca_dev;
if (sd->sensor == SENSOR_OV767x) {
if (val < 0)
val = 0x80 - val;
sccb_reg_write(gspca_dev, 0x55, val); /* bright */
} else {
sccb_reg_write(gspca_dev, 0x9b, val);
}
}
static void setcontrast(struct gspca_dev *gspca_dev, s32 val)
{
struct sd *sd = (struct sd *) gspca_dev;
if (sd->sensor == SENSOR_OV767x)
sccb_reg_write(gspca_dev, 0x56, val); /* contras */
else
sccb_reg_write(gspca_dev, 0x9c, val);
}
static void setgain(struct gspca_dev *gspca_dev, s32 val)
{
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 s32 getgain(struct gspca_dev *gspca_dev)
{
return sccb_reg_read(gspca_dev, 0x00);
}
static void setexposure(struct gspca_dev *gspca_dev, s32 val)
{
struct sd *sd = (struct sd *) gspca_dev;
if (sd->sensor == SENSOR_OV767x) {
/* set only aec[9:2] */
sccb_reg_write(gspca_dev, 0x10, val); /* aech */
} else {
/* '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
*/
sccb_reg_write(gspca_dev, 0x08, val >> 7);
sccb_reg_write(gspca_dev, 0x10, val << 1);
}
}
static s32 getexposure(struct gspca_dev *gspca_dev)
{
struct sd *sd = (struct sd *) gspca_dev;
if (sd->sensor == SENSOR_OV767x) {
/* get only aec[9:2] */
return sccb_reg_read(gspca_dev, 0x10); /* aech */
} else {
u8 hi = sccb_reg_read(gspca_dev, 0x08);
u8 lo = sccb_reg_read(gspca_dev, 0x10);
return (hi << 8 | lo) >> 1;
}
}
static void setagc(struct gspca_dev *gspca_dev, s32 val)
{
if (val) {
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);
}
}
static void setawb(struct gspca_dev *gspca_dev, s32 val)
{
struct sd *sd = (struct sd *) gspca_dev;
if (val) {
sccb_reg_write(gspca_dev, 0x13,
sccb_reg_read(gspca_dev, 0x13) | 0x02);
if (sd->sensor == SENSOR_OV772x)
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);
if (sd->sensor == SENSOR_OV772x)
sccb_reg_write(gspca_dev, 0x63,
sccb_reg_read(gspca_dev, 0x63) & ~0xc0);
}
}
static void setaec(struct gspca_dev *gspca_dev, s32 val)
{
struct sd *sd = (struct sd *) gspca_dev;
u8 data;
data = sd->sensor == SENSOR_OV767x ?
0x05 : /* agc + aec */
0x01; /* agc */
switch (val) {
case V4L2_EXPOSURE_AUTO:
sccb_reg_write(gspca_dev, 0x13,
sccb_reg_read(gspca_dev, 0x13) | data);
break;
case V4L2_EXPOSURE_MANUAL:
sccb_reg_write(gspca_dev, 0x13,
sccb_reg_read(gspca_dev, 0x13) & ~data);
break;
}
}
static void setsharpness(struct gspca_dev *gspca_dev, s32 val)
{
sccb_reg_write(gspca_dev, 0x91, val); /* Auto de-noise threshold */
sccb_reg_write(gspca_dev, 0x8e, val); /* De-noise threshold */
}
static void sethvflip(struct gspca_dev *gspca_dev, s32 hflip, s32 vflip)
{
struct sd *sd = (struct sd *) gspca_dev;
u8 val;
if (sd->sensor == SENSOR_OV767x) {
val = sccb_reg_read(gspca_dev, 0x1e); /* mvfp */
val &= ~0x30;
if (hflip)
val |= 0x20;
if (vflip)
val |= 0x10;
sccb_reg_write(gspca_dev, 0x1e, val);
} else {
val = sccb_reg_read(gspca_dev, 0x0c);
val &= ~0xc0;
if (hflip == 0)
val |= 0x40;
if (vflip == 0)
val |= 0x80;
sccb_reg_write(gspca_dev, 0x0c, val);
}
}
static void setlightfreq(struct gspca_dev *gspca_dev, s32 val)
{
struct sd *sd = (struct sd *) gspca_dev;
val = val ? 0x9e : 0x00;
if (sd->sensor == SENSOR_OV767x) {
sccb_reg_write(gspca_dev, 0x2a, 0x00);
if (val)
val = 0x9d; /* insert dummy to 25fps for 50Hz */
}
sccb_reg_write(gspca_dev, 0x2b, val);
}
/* 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);
sd->frame_rate = 30;
return 0;
}
static int ov534_g_volatile_ctrl(struct v4l2_ctrl *ctrl)
{
struct sd *sd = container_of(ctrl->handler, struct sd, ctrl_handler);
struct gspca_dev *gspca_dev = &sd->gspca_dev;
switch (ctrl->id) {
case V4L2_CID_AUTOGAIN:
gspca_dev->usb_err = 0;
if (ctrl->val && sd->gain && gspca_dev->streaming)
sd->gain->val = getgain(gspca_dev);
return gspca_dev->usb_err;
case V4L2_CID_EXPOSURE_AUTO:
gspca_dev->usb_err = 0;
if (ctrl->val == V4L2_EXPOSURE_AUTO && sd->exposure &&
gspca_dev->streaming)
sd->exposure->val = getexposure(gspca_dev);
return gspca_dev->usb_err;
}
return -EINVAL;
}
static int ov534_s_ctrl(struct v4l2_ctrl *ctrl)
{
struct sd *sd = container_of(ctrl->handler, struct sd, ctrl_handler);
struct gspca_dev *gspca_dev = &sd->gspca_dev;
gspca_dev->usb_err = 0;
if (!gspca_dev->streaming)
return 0;
switch (ctrl->id) {
case V4L2_CID_HUE:
sethue(gspca_dev, ctrl->val);
break;
case V4L2_CID_SATURATION:
setsaturation(gspca_dev, ctrl->val);
break;
case V4L2_CID_BRIGHTNESS:
setbrightness(gspca_dev, ctrl->val);
break;
case V4L2_CID_CONTRAST:
setcontrast(gspca_dev, ctrl->val);
break;
case V4L2_CID_AUTOGAIN:
/* case V4L2_CID_GAIN: */
setagc(gspca_dev, ctrl->val);
if (!gspca_dev->usb_err && !ctrl->val && sd->gain)
setgain(gspca_dev, sd->gain->val);
break;
case V4L2_CID_AUTO_WHITE_BALANCE:
setawb(gspca_dev, ctrl->val);
break;
case V4L2_CID_EXPOSURE_AUTO:
/* case V4L2_CID_EXPOSURE: */
setaec(gspca_dev, ctrl->val);
if (!gspca_dev->usb_err && ctrl->val == V4L2_EXPOSURE_MANUAL &&
sd->exposure)
setexposure(gspca_dev, sd->exposure->val);
break;
case V4L2_CID_SHARPNESS:
setsharpness(gspca_dev, ctrl->val);
break;
case V4L2_CID_HFLIP:
sethvflip(gspca_dev, ctrl->val, sd->vflip->val);
break;
case V4L2_CID_VFLIP:
sethvflip(gspca_dev, sd->hflip->val, ctrl->val);
break;
case V4L2_CID_POWER_LINE_FREQUENCY:
setlightfreq(gspca_dev, ctrl->val);
break;
}
return gspca_dev->usb_err;
}
static const struct v4l2_ctrl_ops ov534_ctrl_ops = {
.g_volatile_ctrl = ov534_g_volatile_ctrl,
.s_ctrl = ov534_s_ctrl,
};
static int sd_init_controls(struct gspca_dev *gspca_dev)
{
struct sd *sd = (struct sd *) gspca_dev;
struct v4l2_ctrl_handler *hdl = &sd->ctrl_handler;
/* parameters with different values between the supported sensors */
int saturation_min;
int saturation_max;
int saturation_def;
int brightness_min;
int brightness_max;
int brightness_def;
int contrast_max;
int contrast_def;
int exposure_min;
int exposure_max;
int exposure_def;
int hflip_def;
if (sd->sensor == SENSOR_OV767x) {
saturation_min = 0,
saturation_max = 6,
saturation_def = 3,
brightness_min = -127;
brightness_max = 127;
brightness_def = 0;
contrast_max = 0x80;
contrast_def = 0x40;
exposure_min = 0x08;
exposure_max = 0x60;
exposure_def = 0x13;
hflip_def = 1;
} else {
saturation_min = 0,
saturation_max = 255,
saturation_def = 64,
brightness_min = 0;
brightness_max = 255;
brightness_def = 0;
contrast_max = 255;
contrast_def = 32;
exposure_min = 0;
exposure_max = 255;
exposure_def = 120;
hflip_def = 0;
}
gspca_dev->vdev.ctrl_handler = hdl;
v4l2_ctrl_handler_init(hdl, 13);
if (sd->sensor == SENSOR_OV772x)
sd->hue = v4l2_ctrl_new_std(hdl, &ov534_ctrl_ops,
V4L2_CID_HUE, -90, 90, 1, 0);
sd->saturation = v4l2_ctrl_new_std(hdl, &ov534_ctrl_ops,
V4L2_CID_SATURATION, saturation_min, saturation_max, 1,
saturation_def);
sd->brightness = v4l2_ctrl_new_std(hdl, &ov534_ctrl_ops,
V4L2_CID_BRIGHTNESS, brightness_min, brightness_max, 1,
brightness_def);
sd->contrast = v4l2_ctrl_new_std(hdl, &ov534_ctrl_ops,
V4L2_CID_CONTRAST, 0, contrast_max, 1, contrast_def);
if (sd->sensor == SENSOR_OV772x) {
sd->autogain = v4l2_ctrl_new_std(hdl, &ov534_ctrl_ops,
V4L2_CID_AUTOGAIN, 0, 1, 1, 1);
sd->gain = v4l2_ctrl_new_std(hdl, &ov534_ctrl_ops,
V4L2_CID_GAIN, 0, 63, 1, 20);
}
sd->autoexposure = v4l2_ctrl_new_std_menu(hdl, &ov534_ctrl_ops,
V4L2_CID_EXPOSURE_AUTO,
V4L2_EXPOSURE_MANUAL, 0,
V4L2_EXPOSURE_AUTO);
sd->exposure = v4l2_ctrl_new_std(hdl, &ov534_ctrl_ops,
V4L2_CID_EXPOSURE, exposure_min, exposure_max, 1,
exposure_def);
sd->autowhitebalance = v4l2_ctrl_new_std(hdl, &ov534_ctrl_ops,
V4L2_CID_AUTO_WHITE_BALANCE, 0, 1, 1, 1);
if (sd->sensor == SENSOR_OV772x)
sd->sharpness = v4l2_ctrl_new_std(hdl, &ov534_ctrl_ops,
V4L2_CID_SHARPNESS, 0, 63, 1, 0);
sd->hflip = v4l2_ctrl_new_std(hdl, &ov534_ctrl_ops,
V4L2_CID_HFLIP, 0, 1, 1, hflip_def);
sd->vflip = v4l2_ctrl_new_std(hdl, &ov534_ctrl_ops,
V4L2_CID_VFLIP, 0, 1, 1, 0);
sd->plfreq = v4l2_ctrl_new_std_menu(hdl, &ov534_ctrl_ops,
V4L2_CID_POWER_LINE_FREQUENCY,
V4L2_CID_POWER_LINE_FREQUENCY_50HZ, 0,
V4L2_CID_POWER_LINE_FREQUENCY_DISABLED);
if (hdl->error) {
pr_err("Could not initialize controls\n");
return hdl->error;
}
if (sd->sensor == SENSOR_OV772x)
v4l2_ctrl_auto_cluster(2, &sd->autogain, 0, true);
v4l2_ctrl_auto_cluster(2, &sd->autoexposure, V4L2_EXPOSURE_MANUAL,
true);
return 0;
}
/* this function is called at probe and resume time */
static int sd_init(struct gspca_dev *gspca_dev)
{
struct sd *sd = (struct sd *) gspca_dev;
u16 sensor_id;
static const struct reg_array bridge_init[NSENSORS] = {
[SENSOR_OV767x] = {bridge_init_767x, ARRAY_SIZE(bridge_init_767x)},
[SENSOR_OV772x] = {bridge_init_772x, ARRAY_SIZE(bridge_init_772x)},
};
static const struct reg_array sensor_init[NSENSORS] = {
[SENSOR_OV767x] = {sensor_init_767x, ARRAY_SIZE(sensor_init_767x)},
[SENSOR_OV772x] = {sensor_init_772x, ARRAY_SIZE(sensor_init_772x)},
};
/* 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);
if ((sensor_id & 0xfff0) == 0x7670) {
sd->sensor = SENSOR_OV767x;
gspca_dev->cam.cam_mode = ov767x_mode;
gspca_dev->cam.nmodes = ARRAY_SIZE(ov767x_mode);
} else {
sd->sensor = SENSOR_OV772x;
gspca_dev->cam.bulk = 1;
gspca_dev->cam.bulk_size = 16384;
gspca_dev->cam.bulk_nurbs = 2;
gspca_dev->cam.mode_framerates = ov772x_framerates;
}
/* initialize */
reg_w_array(gspca_dev, bridge_init[sd->sensor].val,
bridge_init[sd->sensor].len);
ov534_set_led(gspca_dev, 1);
sccb_w_array(gspca_dev, sensor_init[sd->sensor].val,
sensor_init[sd->sensor].len);
sd_stopN(gspca_dev);
/* set_frame_rate(gspca_dev); */
return gspca_dev->usb_err;
}
static int sd_start(struct gspca_dev *gspca_dev)
{
struct sd *sd = (struct sd *) gspca_dev;
int mode;
static const struct reg_array bridge_start[NSENSORS][2] = {
[SENSOR_OV767x] = {{bridge_start_qvga_767x,
ARRAY_SIZE(bridge_start_qvga_767x)},
{bridge_start_vga_767x,
ARRAY_SIZE(bridge_start_vga_767x)}},
[SENSOR_OV772x] = {{bridge_start_qvga_772x,
ARRAY_SIZE(bridge_start_qvga_772x)},
{bridge_start_vga_772x,
ARRAY_SIZE(bridge_start_vga_772x)}},
};
static const struct reg_array sensor_start[NSENSORS][2] = {
[SENSOR_OV767x] = {{sensor_start_qvga_767x,
ARRAY_SIZE(sensor_start_qvga_767x)},
{sensor_start_vga_767x,
ARRAY_SIZE(sensor_start_vga_767x)}},
[SENSOR_OV772x] = {{sensor_start_qvga_772x,
ARRAY_SIZE(sensor_start_qvga_772x)},
{sensor_start_vga_772x,
ARRAY_SIZE(sensor_start_vga_772x)}},
};
/* (from ms-win trace) */
if (sd->sensor == SENSOR_OV767x)
sccb_reg_write(gspca_dev, 0x1e, 0x04);
/* black sun enable ? */
mode = gspca_dev->curr_mode; /* 0: 320x240, 1: 640x480 */
reg_w_array(gspca_dev, bridge_start[sd->sensor][mode].val,
bridge_start[sd->sensor][mode].len);
sccb_w_array(gspca_dev, sensor_start[sd->sensor][mode].val,
sensor_start[sd->sensor][mode].len);
set_frame_rate(gspca_dev);
if (sd->hue)
sethue(gspca_dev, v4l2_ctrl_g_ctrl(sd->hue));
setsaturation(gspca_dev, v4l2_ctrl_g_ctrl(sd->saturation));
if (sd->autogain)
setagc(gspca_dev, v4l2_ctrl_g_ctrl(sd->autogain));
setawb(gspca_dev, v4l2_ctrl_g_ctrl(sd->autowhitebalance));
setaec(gspca_dev, v4l2_ctrl_g_ctrl(sd->autoexposure));
if (sd->gain)
setgain(gspca_dev, v4l2_ctrl_g_ctrl(sd->gain));
setexposure(gspca_dev, v4l2_ctrl_g_ctrl(sd->exposure));
setbrightness(gspca_dev, v4l2_ctrl_g_ctrl(sd->brightness));
setcontrast(gspca_dev, v4l2_ctrl_g_ctrl(sd->contrast));
if (sd->sharpness)
setsharpness(gspca_dev, v4l2_ctrl_g_ctrl(sd->sharpness));
sethvflip(gspca_dev, v4l2_ctrl_g_ctrl(sd->hflip),
v4l2_ctrl_g_ctrl(sd->vflip));
setlightfreq(gspca_dev, v4l2_ctrl_g_ctrl(sd->plfreq));
ov534_set_led(gspca_dev, 1);
ov534_reg_write(gspca_dev, 0xe0, 0x00);
return gspca_dev->usb_err;
}
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;
int payload_len;
payload_len = gspca_dev->cam.bulk ? 2048 : 2040;
do {
len = min(remaining_len, payload_len);
/* 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->pixfmt.pixelformat == V4L2_PIX_FMT_YUYV
&& gspca_dev->image_len + len - 12 !=
gspca_dev->pixfmt.width *
gspca_dev->pixfmt.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);
}
/* get stream parameters (framerate) */
static void 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;
cp->capability |= V4L2_CAP_TIMEPERFRAME;
tpf->numerator = 1;
tpf->denominator = sd->frame_rate;
}
/* set stream parameters (framerate) */
static void 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;
/* 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;
}
/* 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,
.get_streamparm = sd_get_streamparm,
.set_streamparm = sd_set_streamparm,
};
/* -- module initialisation -- */
static const struct usb_device_id device_table[] = {
{USB_DEVICE(0x1415, 0x2000)},
{USB_DEVICE(0x06f8, 0x3002)},
{}
};
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);
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