/* SATURATION *//* return a value between [-100 , 100] */int pwc_get_saturation(struct pwc_device *pdev, int *value){	char buf;	int ret, saturation_register;	if (pdev->type < 675)		return -EINVAL;	if (pdev->type < 730)		saturation_register = SATURATION_MODE_FORMATTER2;	else		saturation_register = SATURATION_MODE_FORMATTER1;	ret = RecvControlMsg(GET_CHROM_CTL, saturation_register, 1);	if (ret < 0)		return ret;	*value = (signed)buf;	return 0;}/* @param value saturation color between [-100 , 100] */int pwc_set_saturation(struct pwc_device *pdev, int value){	char buf;	int saturation_register;	if (pdev->type < 675)		return -EINVAL;	if (value < -100)		value = -100;	if (value > 100)		value = 100;	if (pdev->type < 730)		saturation_register = SATURATION_MODE_FORMATTER2;	else		saturation_register = SATURATION_MODE_FORMATTER1;	return SendControlMsg(SET_CHROM_CTL, saturation_register, 1);}/* AGC */int pwc_set_agc(struct pwc_device *pdev, int mode, int value){	char buf;	int ret;		if (mode)		buf = 0x0; /* auto */	else		buf = 0xff; /* fixed */	ret = SendControlMsg(SET_LUM_CTL, AGC_MODE_FORMATTER, 1);		if (!mode && ret >= 0) {		if (value < 0)			value = 0;		if (value > 0xffff)			value = 0xffff;		buf = (value >> 10) & 0x3F;		ret = SendControlMsg(SET_LUM_CTL, PRESET_AGC_FORMATTER, 1);	}	if (ret < 0)		return ret;	return 0;}int pwc_get_agc(struct pwc_device *pdev, int *value){	unsigned char buf;	int ret;		ret = RecvControlMsg(GET_LUM_CTL, AGC_MODE_FORMATTER, 1);	if (ret < 0)		return ret;	if (buf != 0) { /* fixed */		ret = RecvControlMsg(GET_LUM_CTL, PRESET_AGC_FORMATTER, 1);		if (ret < 0)			return ret;		if (buf > 0x3F)			buf = 0x3F;		*value = (buf << 10);			}	else { /* auto */		ret = RecvControlMsg(GET_STATUS_CTL, READ_AGC_FORMATTER, 1);		if (ret < 0)			return ret;		/* Gah... this value ranges from 0x00 ... 0x9F */		if (buf > 0x9F)			buf = 0x9F;		*value = -(48 + buf * 409);	}	return 0;}int pwc_set_shutter_speed(struct pwc_device *pdev, int mode, int value){	char buf[2];	int speed, ret;	if (mode)		buf[0] = 0x0;	/* auto */	else		buf[0] = 0xff; /* fixed */		ret = SendControlMsg(SET_LUM_CTL, SHUTTER_MODE_FORMATTER, 1);	if (!mode && ret >= 0) {		if (value < 0)			value = 0;		if (value > 0xffff)			value = 0xffff;		if (DEVICE_USE_CODEC2(pdev->type)) {			/* speed ranges from 0x0 to 0x290 (656) */			speed = (value / 100);			buf[1] = speed >> 8;			buf[0] = speed & 0xff;		} else if (DEVICE_USE_CODEC3(pdev->type)) {			/* speed seems to range from 0x0 to 0xff */			buf[1] = 0;			buf[0] = value >> 8;		}		ret = SendControlMsg(SET_LUM_CTL, PRESET_SHUTTER_FORMATTER, 2);	}	return ret;}	/* This function is not exported to v4l1, so output values between 0 -> 256 */int pwc_get_shutter_speed(struct pwc_device *pdev, int *value){	unsigned char buf[2];	int ret;		ret = RecvControlMsg(GET_STATUS_CTL, READ_SHUTTER_FORMATTER, 2);	if (ret < 0)		return ret;	*value = buf[0] + (buf[1] << 8);	if (DEVICE_USE_CODEC2(pdev->type)) {		/* speed ranges from 0x0 to 0x290 (656) */		*value *= 256/656;	} else if (DEVICE_USE_CODEC3(pdev->type)) {		/* speed seems to range from 0x0 to 0xff */	}	return 0;}/* POWER */int pwc_camera_power(struct pwc_device *pdev, int power){	char buf;	if (pdev->type < 675 || (pdev->type < 730 && pdev->release < 6))		return 0;	/* Not supported by Nala or Timon < release 6 */	if (power)		buf = 0x00; /* active */	else		buf = 0xFF; /* power save */	return SendControlMsg(SET_STATUS_CTL, SET_POWER_SAVE_MODE_FORMATTER, 1);}/* private calls */int pwc_restore_user(struct pwc_device *pdev){	char buf; /* dummy */	return SendControlMsg(SET_STATUS_CTL, RESTORE_USER_DEFAULTS_FORMATTER, 0);}int pwc_save_user(struct pwc_device *pdev){	char buf; /* dummy */	return SendControlMsg(SET_STATUS_CTL, SAVE_USER_DEFAULTS_FORMATTER, 0);}int pwc_restore_factory(struct pwc_device *pdev){	char buf; /* dummy */	return SendControlMsg(SET_STATUS_CTL, RESTORE_FACTORY_DEFAULTS_FORMATTER, 0);} /* ************************************************* */ /* Patch by Alvarado: (not in the original version   */ /*  * the camera recognizes modes from 0 to 4:  *  * 00: indoor (incandescant lighting)  * 01: outdoor (sunlight)  * 02: fluorescent lighting  * 03: manual  * 04: auto  */ int pwc_set_awb(struct pwc_device *pdev, int mode){	char buf;	int ret;		if (mode < 0)	    mode = 0;		if (mode > 4)	    mode = 4;		buf = mode & 0x07; /* just the lowest three bits */		ret = SendControlMsg(SET_CHROM_CTL, WB_MODE_FORMATTER, 1);		if (ret < 0)		return ret;	return 0;}int pwc_get_awb(struct pwc_device *pdev){	unsigned char buf;	int ret;		ret = RecvControlMsg(GET_CHROM_CTL, WB_MODE_FORMATTER, 1);	if (ret < 0) 		return ret;	return buf;}int pwc_set_red_gain(struct pwc_device *pdev, int value){        unsigned char buf;	if (value < 0)		value = 0;	if (value > 0xffff)		value = 0xffff;	/* only the msb is considered */	buf = value >> 8;	return SendControlMsg(SET_CHROM_CTL, PRESET_MANUAL_RED_GAIN_FORMATTER, 1);}int pwc_get_red_gain(struct pwc_device *pdev, int *value){	unsigned char buf;	int ret;		ret = RecvControlMsg(GET_CHROM_CTL, PRESET_MANUAL_RED_GAIN_FORMATTER, 1);	if (ret < 0)	    return ret;	*value = buf << 8;	return 0;}int pwc_set_blue_gain(struct pwc_device *pdev, int value){	unsigned char buf;	if (value < 0)		value = 0;	if (value > 0xffff)		value = 0xffff;	/* only the msb is considered */	buf = value >> 8;	return SendControlMsg(SET_CHROM_CTL, PRESET_MANUAL_BLUE_GAIN_FORMATTER, 1);}int pwc_get_blue_gain(struct pwc_device *pdev, int *value){	unsigned char buf;	int ret;		ret = RecvControlMsg(GET_CHROM_CTL, PRESET_MANUAL_BLUE_GAIN_FORMATTER, 1);	if (ret < 0)	    return ret;	*value = buf << 8;	return 0;}/* The following two functions are different, since they only read the   internal red/blue gains, which may be different from the manual    gains set or read above. */   static int pwc_read_red_gain(struct pwc_device *pdev, int *value){	unsigned char buf;	int ret;		ret = RecvControlMsg(GET_STATUS_CTL, READ_RED_GAIN_FORMATTER, 1);	if (ret < 0)		return ret;	*value = buf << 8;	return 0;}static int pwc_read_blue_gain(struct pwc_device *pdev, int *value){	unsigned char buf;	int ret;		ret = RecvControlMsg(GET_STATUS_CTL, READ_BLUE_GAIN_FORMATTER, 1);	if (ret < 0)		return ret;	*value = buf << 8;	return 0;}static int pwc_set_wb_speed(struct pwc_device *pdev, int speed){	unsigned char buf;		/* useful range is 0x01..0x20 */	buf = speed / 0x7f0;	return SendControlMsg(SET_CHROM_CTL, AWB_CONTROL_SPEED_FORMATTER, 1);}static int pwc_get_wb_speed(struct pwc_device *pdev, int *value){	unsigned char buf;	int ret;		ret = RecvControlMsg(GET_CHROM_CTL, AWB_CONTROL_SPEED_FORMATTER, 1);	if (ret < 0)		return ret;	*value = buf * 0x7f0;	return 0;}static int pwc_set_wb_delay(struct pwc_device *pdev, int delay){	unsigned char buf;		/* useful range is 0x01..0x3F */	buf = (delay >> 10);	return SendControlMsg(SET_CHROM_CTL, AWB_CONTROL_DELAY_FORMATTER, 1);}static int pwc_get_wb_delay(struct pwc_device *pdev, int *value){	unsigned char buf;	int ret;		ret = RecvControlMsg(GET_CHROM_CTL, AWB_CONTROL_DELAY_FORMATTER, 1);	if (ret < 0)		return ret;	*value = buf << 10;	return 0;}int pwc_set_leds(struct pwc_device *pdev, int on_value, int off_value){	unsigned char buf[2];	if (pdev->type < 730)		return 0;	on_value /= 100;	off_value /= 100;	if (on_value < 0)		on_value = 0;	if (on_value > 0xff)		on_value = 0xff;	if (off_value < 0)		off_value = 0;	if (off_value > 0xff)		off_value = 0xff;	buf[0] = on_value;	buf[1] = off_value;	return SendControlMsg(SET_STATUS_CTL, LED_FORMATTER, 2);}int pwc_get_leds(struct pwc_device *pdev, int *on_value, int *off_value){	unsigned char buf[2];	int ret;		if (pdev->type < 730) {		*on_value = -1;		*off_value = -1;		return 0;	}	ret = RecvControlMsg(GET_STATUS_CTL, LED_FORMATTER, 2);	if (ret < 0)		return ret;	*on_value = buf[0] * 100;	*off_value = buf[1] * 100;	return 0;}int pwc_set_contour(struct pwc_device *pdev, int contour){	unsigned char buf;	int ret;		if (contour < 0)		buf = 0xff; /* auto contour on */	else		buf = 0x0; /* auto contour off */	ret = SendControlMsg(SET_LUM_CTL, AUTO_CONTOUR_FORMATTER, 1);	if (ret < 0)		return ret;		if (contour < 0)		return 0;	if (contour > 0xffff)		contour = 0xffff;		buf = (contour >> 10); /* contour preset is [0..3f] */	ret = SendControlMsg(SET_LUM_CTL, PRESET_CONTOUR_FORMATTER, 1);	if (ret < 0)			return ret;		return 0;}int pwc_get_contour(struct pwc_device *pdev, int *contour){	unsigned char buf;	int ret;		ret = RecvControlMsg(GET_LUM_CTL, AUTO_CONTOUR_FORMATTER, 1);	if (ret < 0)		return ret;	if (buf == 0) {		/* auto mode off, query current preset value */		ret = RecvControlMsg(GET_LUM_CTL, PRESET_CONTOUR_FORMATTER, 1);		if (ret < 0)				return ret;		*contour = buf << 10;	}	else		*contour = -1;	return 0;}int pwc_set_backlight(struct pwc_device *pdev, int backlight){	unsigned char buf;		if (backlight)		buf = 0xff;	else		buf = 0x0;	return SendControlMsg(SET_LUM_CTL, BACK_LIGHT_COMPENSATION_FORMATTER, 1);}int pwc_get_backlight(struct pwc_device *pdev, int *backlight){	int ret;	unsigned char buf;		ret = RecvControlMsg(GET_LUM_CTL, BACK_LIGHT_COMPENSATION_FORMATTER, 1);	if (ret < 0)		return ret;	*backlight = !!buf;	return 0;}int pwc_set_colour_mode(struct pwc_device *pdev, int colour){	unsigned char buf;		if (colour)		buf = 0xff;	else		buf = 0x0;	return SendControlMsg(SET_CHROM_CTL, COLOUR_MODE_FORMATTER, 1);}int pwc_get_colour_mode(struct pwc_device *pdev, int *colour){	int ret;	unsigned char buf;		ret = RecvControlMsg(GET_CHROM_CTL, COLOUR_MODE_FORMATTER, 1);	if (ret < 0)		return ret;	*colour = !!buf;	return 0;}int pwc_set_flicker(struct pwc_device *pdev, int flicker){	unsigned char buf;		if (flicker)		buf = 0xff;	else		buf = 0x0;	return SendControlMsg(SET_LUM_CTL, FLICKERLESS_MODE_FORMATTER, 1);}int pwc_get_flicker(struct pwc_device *pdev, int *flicker){	int ret;	unsigned char buf;		ret = RecvControlMsg(GET_LUM_CTL, FLICKERLESS_MODE_FORMATTER, 1);	if (ret < 0)		return ret;	*flicker = !!buf;	return 0;}int pwc_set_dynamic_noise(struct pwc_device *pdev, int noise){	unsigned char buf;	if (noise < 0)		noise = 0;	if (noise > 3)		noise = 3;	buf = noise;	return SendControlMsg(SET_LUM_CTL, DYNAMIC_NOISE_CONTROL_FORMATTER, 1);}int pwc_get_dynamic_noise(struct pwc_device *pdev, int *noise){	int ret;	unsigned char buf;		ret = RecvControlMsg(GET_LUM_CTL, DYNAMIC_NOISE_CONTROL_FORMATTER, 1);	if (ret < 0)		return ret;	*noise = buf;	return 0;}static int _pwc_mpt_reset(struct pwc_device *pdev, int flags){	unsigned char buf;