etoms.c

trident tm5600的linux驱动

	struct sd *sd = (struct sd *) gspca_dev;
	int i;
	int brightness = 0;

	for (i = 0; i < 4; i++) {
		reg_r(gspca_dev, ET_O_RED + i, 1);
		brightness += gspca_dev->usb_buf[0];
	}
	sd->brightness = brightness >> 3;
}

static void setcontrast(struct gspca_dev *gspca_dev)
{
	struct sd *sd = (struct sd *) gspca_dev;
	__u8 RGBG[] = { 0x80, 0x80, 0x80, 0x80, 0x00, 0x00 };
	__u8 contrast = sd->contrast;

	memset(RGBG, contrast, sizeof(RGBG) - 2);
	reg_w(gspca_dev, ET_G_RED, RGBG, 6);
}

static void getcontrast(struct gspca_dev *gspca_dev)
{
	struct sd *sd = (struct sd *) gspca_dev;
	int i;
	int contrast = 0;

	for (i = 0; i < 4; i++) {
		reg_r(gspca_dev, ET_G_RED + i, 1);
		contrast += gspca_dev->usb_buf[0];
	}
	sd->contrast = contrast >> 2;
}

static void setcolors(struct gspca_dev *gspca_dev)
{
	struct sd *sd = (struct sd *) gspca_dev;
	__u8 I2cc[] = { 0x05, 0x02, 0x02, 0x05, 0x0d };
	__u8 i2cflags = 0x01;
	/* __u8 green = 0; */
	__u8 colors = sd->colors;

	I2cc[3] = colors;	/* red */
	I2cc[0] = 15 - colors;	/* blue */
	/* green = 15 - ((((7*I2cc[0]) >> 2 ) + I2cc[3]) >> 1); */
	/* I2cc[1] = I2cc[2] = green; */
	if (sd->sensor == SENSOR_PAS106) {
		i2c_w(gspca_dev, PAS106_REG13, &i2cflags, 1, 3);
		i2c_w(gspca_dev, PAS106_REG9, I2cc, sizeof I2cc, 1);
	}
/*	PDEBUG(D_CONF , "Etoms red %d blue %d green %d",
		I2cc[3], I2cc[0], green); */
}

static void getcolors(struct gspca_dev *gspca_dev)
{
	struct sd *sd = (struct sd *) gspca_dev;

	if (sd->sensor == SENSOR_PAS106) {
/*		i2c_r(gspca_dev, PAS106_REG9);		 * blue */
		i2c_r(gspca_dev, PAS106_REG9 + 3);	/* red */
		sd->colors = gspca_dev->usb_buf[0] & 0x0f;
	}
}

static void setautogain(struct gspca_dev *gspca_dev)
{
	struct sd *sd = (struct sd *) gspca_dev;

	if (sd->autogain)
		sd->ag_cnt = AG_CNT_START;
	else
		sd->ag_cnt = -1;
}

static void Et_init1(struct gspca_dev *gspca_dev)
{
	__u8 value;
/*	__u8 I2c0 [] = {0x0a, 0x12, 0x05, 0x22, 0xac, 0x00, 0x01, 0x00}; */
	__u8 I2c0[] = { 0x0a, 0x12, 0x05, 0x6d, 0xcd, 0x00, 0x01, 0x00 };
						/* try 1/120 0x6d 0xcd 0x40 */
/*	__u8 I2c0 [] = {0x0a, 0x12, 0x05, 0xfe, 0xfe, 0xc0, 0x01, 0x00};
						 * 1/60000 hmm ?? */

	PDEBUG(D_STREAM, "Open Init1 ET");
	reg_w_val(gspca_dev, ET_GPIO_DIR_CTRL, 7);
	reg_r(gspca_dev, ET_GPIO_IN, 1);
	reg_w_val(gspca_dev, ET_RESET_ALL, 1);
	reg_w_val(gspca_dev, ET_RESET_ALL, 0);
	reg_w_val(gspca_dev, ET_ClCK, 0x10);
	reg_w_val(gspca_dev, ET_CTRL, 0x19);
	/*   compression et subsampling */
	if (gspca_dev->cam.cam_mode[(int) gspca_dev->curr_mode].priv)
		value = ET_COMP_VAL1;
	else
		value = ET_COMP_VAL0;
	PDEBUG(D_STREAM, "Open mode %d Compression %d",
	       gspca_dev->cam.cam_mode[(int) gspca_dev->curr_mode].priv,
	       value);
	reg_w_val(gspca_dev, ET_COMP, value);
	reg_w_val(gspca_dev, ET_MAXQt, 0x1d);
	reg_w_val(gspca_dev, ET_MINQt, 0x02);
	/* undocumented registers */
	reg_w_val(gspca_dev, ET_REG1d, 0xff);
	reg_w_val(gspca_dev, ET_REG1e, 0xff);
	reg_w_val(gspca_dev, ET_REG1f, 0xff);
	reg_w_val(gspca_dev, ET_REG20, 0x35);
	reg_w_val(gspca_dev, ET_REG21, 0x01);
	reg_w_val(gspca_dev, ET_REG22, 0x00);
	reg_w_val(gspca_dev, ET_REG23, 0xf7);
	reg_w_val(gspca_dev, ET_REG24, 0xff);
	reg_w_val(gspca_dev, ET_REG25, 0x07);
	/* colors setting */
	reg_w_val(gspca_dev, ET_G_RED, 0x80);
	reg_w_val(gspca_dev, ET_G_GREEN1, 0x80);
	reg_w_val(gspca_dev, ET_G_BLUE, 0x80);
	reg_w_val(gspca_dev, ET_G_GREEN2, 0x80);
	reg_w_val(gspca_dev, ET_G_GR_H, 0x00);
	reg_w_val(gspca_dev, ET_G_GB_H, 0x00);
	/* Window control registers */
	reg_w_val(gspca_dev, ET_SYNCHRO, 0xf0);
	reg_w_val(gspca_dev, ET_STARTX, 0x56);		/* 0x56 */
	reg_w_val(gspca_dev, ET_STARTY, 0x05);		/* 0x04 */
	reg_w_val(gspca_dev, ET_WIDTH_LOW, 0x60);
	reg_w_val(gspca_dev, ET_HEIGTH_LOW, 0x20);
	reg_w_val(gspca_dev, ET_W_H_HEIGTH, 0x50);
	reg_w_val(gspca_dev, ET_REG6e, 0x86);
	reg_w_val(gspca_dev, ET_REG6f, 0x01);
	reg_w_val(gspca_dev, ET_REG70, 0x86);
	reg_w_val(gspca_dev, ET_REG71, 0x14);
	reg_w_val(gspca_dev, ET_REG72, 0x00);
	/* Clock Pattern registers */
	reg_w_val(gspca_dev, ET_REG73, 0x00);
	reg_w_val(gspca_dev, ET_REG74, 0x00);
	reg_w_val(gspca_dev, ET_REG75, 0x0a);
	reg_w_val(gspca_dev, ET_I2C_CLK, 0x04);
	reg_w_val(gspca_dev, ET_PXL_CLK, 0x01);
	/* set the sensor */
	if (gspca_dev->cam.cam_mode[(int) gspca_dev->curr_mode].priv) {
		I2c0[0] = 0x06;
		i2c_w(gspca_dev, PAS106_REG2, I2c0, sizeof I2c0, 1);
		i2c_w(gspca_dev, PAS106_REG9, I2c2, sizeof I2c2, 1);
		value = 0x06;
		i2c_w(gspca_dev, PAS106_REG2, &value, 1, 1);
		i2c_w(gspca_dev, PAS106_REG3, I2c3, sizeof I2c3, 1);
		/* value = 0x1f; */
		value = 0x04;
		i2c_w(gspca_dev, PAS106_REG0e, &value, 1, 1);
	} else {
		I2c0[0] = 0x0a;

		i2c_w(gspca_dev, PAS106_REG2, I2c0, sizeof I2c0, 1);
		i2c_w(gspca_dev, PAS106_REG9, I2c2, sizeof I2c2, 1);
		value = 0x0a;
		i2c_w(gspca_dev, PAS106_REG2, &value, 1, 1);
		i2c_w(gspca_dev, PAS106_REG3, I2c3, sizeof I2c3, 1);
		value = 0x04;
		/* value = 0x10; */
		i2c_w(gspca_dev, PAS106_REG0e, &value, 1, 1);
		/* bit 2 enable bit 1:2 select 0 1 2 3
		   value = 0x07;                                * curve 0 *
		   i2c_w(gspca_dev, PAS106_REG0f, &value, 1, 1);
		 */
	}

/*	value = 0x01; */
/*	value = 0x22; */
/*	i2c_w(gspca_dev, PAS106_REG5, &value, 1, 1); */
	/* magnetude and sign bit for DAC */
	i2c_w(gspca_dev, PAS106_REG7, I2c4, sizeof I2c4, 1);
	/* now set by fifo the whole colors setting */
	reg_w(gspca_dev, ET_G_RED, GainRGBG, 6);
	getcolors(gspca_dev);
	setcolors(gspca_dev);
}

/* 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 = 1;
	sd->sensor = id->driver_info;
	if (sd->sensor == SENSOR_PAS106) {
		cam->cam_mode = sif_mode;
		cam->nmodes = sizeof sif_mode / sizeof sif_mode[0];
	} else {
		cam->cam_mode = vga_mode;
		cam->nmodes = sizeof vga_mode / sizeof vga_mode[0];
		gspca_dev->ctrl_dis = (1 << COLOR_IDX);
	}
	sd->brightness = BRIGHTNESS_DEF;
	sd->contrast = CONTRAST_DEF;
	sd->colors = COLOR_DEF;
	sd->autogain = AUTOGAIN_DEF;
	sd->ag_cnt = -1;
	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;

	if (sd->sensor == SENSOR_PAS106)
		Et_init1(gspca_dev);
	else
		Et_init2(gspca_dev);
	reg_w_val(gspca_dev, ET_RESET_ALL, 0x08);
	et_video(gspca_dev, 0);		/* video off */
	return 0;
}

/* -- start the camera -- */
static int sd_start(struct gspca_dev *gspca_dev)
{
	struct sd *sd = (struct sd *) gspca_dev;

	if (sd->sensor == SENSOR_PAS106)
		Et_init1(gspca_dev);
	else
		Et_init2(gspca_dev);

	setautogain(gspca_dev);

	reg_w_val(gspca_dev, ET_RESET_ALL, 0x08);
	et_video(gspca_dev, 1);		/* video on */
	return 0;
}

static void sd_stopN(struct gspca_dev *gspca_dev)
{
	et_video(gspca_dev, 0);		/* video off */
}

static __u8 Et_getgainG(struct gspca_dev *gspca_dev)
{
	struct sd *sd = (struct sd *) gspca_dev;

	if (sd->sensor == SENSOR_PAS106) {
		i2c_r(gspca_dev, PAS106_REG0e);
		PDEBUG(D_CONF, "Etoms gain G %d", gspca_dev->usb_buf[0]);
		return gspca_dev->usb_buf[0];
	}
	return 0x1f;
}

static void Et_setgainG(struct gspca_dev *gspca_dev, __u8 gain)
{
	struct sd *sd = (struct sd *) gspca_dev;

	if (sd->sensor == SENSOR_PAS106) {
		__u8 i2cflags = 0x01;

		i2c_w(gspca_dev, PAS106_REG13, &i2cflags, 1, 3);
		i2c_w(gspca_dev, PAS106_REG0e, &gain, 1, 1);
#if 0
		i2c_w(gspca_dev, 0x09, &gain, 1, 1);
		i2c_w(gspca_dev, 0x0a, &gain, 1, 1);
		i2c_w(gspca_dev, 0x0b, &gain, 1, 1);
		i2c_w(gspca_dev, 0x0c, &gain, 1, 1);
#endif
	}
}

#define BLIMIT(bright) \
	(__u8)((bright > 0x1f)?0x1f:((bright < 4)?3:bright))
#define LIMIT(color) \
	(unsigned char)((color > 0xff)?0xff:((color < 0)?0:color))

static void do_autogain(struct gspca_dev *gspca_dev)
{
	struct sd *sd = (struct sd *) gspca_dev;
	__u8 luma;
	__u8 luma_mean = 128;
	__u8 luma_delta = 20;
	__u8 spring = 4;
	int Gbright;
	__u8 r, g, b;

	if (sd->ag_cnt < 0)
		return;
	if (--sd->ag_cnt >= 0)
		return;
	sd->ag_cnt = AG_CNT_START;

	Gbright = Et_getgainG(gspca_dev);
	reg_r(gspca_dev, ET_LUMA_CENTER, 4);
	g = (gspca_dev->usb_buf[0] + gspca_dev->usb_buf[3]) >> 1;
	r = gspca_dev->usb_buf[1];
	b = gspca_dev->usb_buf[2];
	r = ((r << 8) - (r << 4) - (r << 3)) >> 10;
	b = ((b << 7) >> 10);
	g = ((g << 9) + (g << 7) + (g << 5)) >> 10;
	luma = LIMIT(r + g + b);
	PDEBUG(D_FRAM, "Etoms luma G %d", luma);
	if (luma < luma_mean - luma_delta || luma > luma_mean + luma_delta) {
		Gbright += (luma_mean - luma) >> spring;
		Gbright = BLIMIT(Gbright);
		PDEBUG(D_FRAM, "Etoms Gbright %d", Gbright);
		Et_setgainG(gspca_dev, (__u8) Gbright);
	}
}

#undef BLIMIT
#undef LIMIT

static void sd_pkt_scan(struct gspca_dev *gspca_dev,
			struct gspca_frame *frame,	/* target */
			__u8 *data,			/* isoc packet */
			int len)			/* iso packet length */
{
	int seqframe;

	seqframe = data[0] & 0x3f;
	len = (int) (((data[0] & 0xc0) << 2) | data[1]);
	if (seqframe == 0x3f) {
		PDEBUG(D_FRAM,
		       "header packet found datalength %d !!", len);
		PDEBUG(D_FRAM, "G %d R %d G %d B %d",
		       data[2], data[3], data[4], data[5]);
		data += 30;
		/* don't change datalength as the chips provided it */
		frame = gspca_frame_add(gspca_dev, LAST_PACKET, frame,
					data, 0);
		gspca_frame_add(gspca_dev, FIRST_PACKET, frame, data, len);
		return;
	}
	if (len) {
		data += 8;
		gspca_frame_add(gspca_dev, INTER_PACKET, frame, data, len);
	} else {			/* Drop Packet */
		gspca_dev->last_packet_type = DISCARD_PACKET;
	}
}

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;

	getbrightness(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;

	getcontrast(gspca_dev);
	*val = sd->contrast;
	return 0;
}

static int sd_setcolors(struct gspca_dev *gspca_dev, __s32 val)
{
	struct sd *sd = (struct sd *) gspca_dev;

	sd->colors = val;
	if (gspca_dev->streaming)
		setcolors(gspca_dev);
	return 0;
}

static int sd_getcolors(struct gspca_dev *gspca_dev, __s32 *val)
{
	struct sd *sd = (struct sd *) gspca_dev;

	getcolors(gspca_dev);
	*val = sd->colors;
	return 0;
}

static int sd_setautogain(struct gspca_dev *gspca_dev, __s32 val)
{
	struct sd *sd = (struct sd *) gspca_dev;

	sd->autogain = val;
	if (gspca_dev->streaming)
		setautogain(gspca_dev);
	return 0;
}

static int sd_getautogain(struct gspca_dev *gspca_dev, __s32 *val)
{
	struct sd *sd = (struct sd *) gspca_dev;

	*val = sd->autogain;
	return 0;
}

/* sub-driver description */
static 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,
	.dq_callback = do_autogain,
};

/* -- module initialisation -- */
static __devinitdata struct usb_device_id device_table[] = {
	{USB_DEVICE(0x102c, 0x6151), .driver_info = SENSOR_PAS106},
#if !defined CONFIG_USB_ET61X251 && !defined CONFIG_USB_ET61X251_MODULE
	{USB_DEVICE(0x102c, 0x6251), .driver_info = SENSOR_TAS5130CXX},
#endif
	{}
};

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);