ov519.c

来自「trident tm5600的linux驱动」· C语言 代码 · 共 2,231 行 · 第 1/4 页

 * the same register settings as the OV8610, since they are very similar.
 */
static int ov8xx0_configure(struct sd *sd)
{
	int rc;

	PDEBUG(D_PROBE, "starting ov8xx0 configuration");

	/* Detect sensor (sub)type */
	rc = i2c_r(sd, OV7610_REG_COM_I);
	if (rc < 0) {
		PDEBUG(D_ERR, "Error detecting sensor type");
		return -1;
	}
	if ((rc & 3) == 1) {
		sd->sensor = SEN_OV8610;
	} else {
		PDEBUG(D_ERR, "Unknown image sensor version: %d", rc & 3);
		return -1;
	}

	/* Set sensor-specific vars */
/*	sd->sif = 0;		already done */
	return 0;
}

/* This initializes the OV7610, OV7620, or OV76BE sensor. The OV76BE uses
 * the same register settings as the OV7610, since they are very similar.
 */
static int ov7xx0_configure(struct sd *sd)
{
	int rc, high, low;


	PDEBUG(D_PROBE, "starting OV7xx0 configuration");

	/* Detect sensor (sub)type */
	rc = i2c_r(sd, OV7610_REG_COM_I);

	/* add OV7670 here
	 * it appears to be wrongly detected as a 7610 by default */
	if (rc < 0) {
		PDEBUG(D_ERR, "Error detecting sensor type");
		return -1;
	}
	if ((rc & 3) == 3) {
		/* quick hack to make OV7670s work */
		high = i2c_r(sd, 0x0a);
		low = i2c_r(sd, 0x0b);
		/* info("%x, %x", high, low); */
		if (high == 0x76 && low == 0x73) {
			PDEBUG(D_PROBE, "Sensor is an OV7670");
			sd->sensor = SEN_OV7670;
		} else {
			PDEBUG(D_PROBE, "Sensor is an OV7610");
			sd->sensor = SEN_OV7610;
		}
	} else if ((rc & 3) == 1) {
		/* I don't know what's different about the 76BE yet. */
		if (i2c_r(sd, 0x15) & 1)
			PDEBUG(D_PROBE, "Sensor is an OV7620AE");
		else
			PDEBUG(D_PROBE, "Sensor is an OV76BE");

		/* OV511+ will return all zero isoc data unless we
		 * configure the sensor as a 7620. Someone needs to
		 * find the exact reg. setting that causes this. */
		sd->sensor = SEN_OV76BE;
	} else if ((rc & 3) == 0) {
		/* try to read product id registers */
		high = i2c_r(sd, 0x0a);
		if (high < 0) {
			PDEBUG(D_ERR, "Error detecting camera chip PID");
			return high;
		}
		low = i2c_r(sd, 0x0b);
		if (low < 0) {
			PDEBUG(D_ERR, "Error detecting camera chip VER");
			return low;
		}
		if (high == 0x76) {
			switch (low) {
			case 0x30:
				PDEBUG(D_PROBE, "Sensor is an OV7630/OV7635");
				PDEBUG(D_ERR,
				      "7630 is not supported by this driver");
				return -1;
			case 0x40:
				PDEBUG(D_PROBE, "Sensor is an OV7645");
				sd->sensor = SEN_OV7640; /* FIXME */
				break;
			case 0x45:
				PDEBUG(D_PROBE, "Sensor is an OV7645B");
				sd->sensor = SEN_OV7640; /* FIXME */
				break;
			case 0x48:
				PDEBUG(D_PROBE, "Sensor is an OV7648");
				sd->sensor = SEN_OV7640; /* FIXME */
				break;
			default:
				PDEBUG(D_PROBE, "Unknown sensor: 0x76%x", low);
				return -1;
			}
		} else {
			PDEBUG(D_PROBE, "Sensor is an OV7620");
			sd->sensor = SEN_OV7620;
		}
	} else {
		PDEBUG(D_ERR, "Unknown image sensor version: %d", rc & 3);
		return -1;
	}

	/* Set sensor-specific vars */
/*	sd->sif = 0;		already done */
	return 0;
}

/* This initializes the OV6620, OV6630, OV6630AE, or OV6630AF sensor. */
static int ov6xx0_configure(struct sd *sd)
{
	int rc;
	PDEBUG(D_PROBE, "starting OV6xx0 configuration");

	/* Detect sensor (sub)type */
	rc = i2c_r(sd, OV7610_REG_COM_I);
	if (rc < 0) {
		PDEBUG(D_ERR, "Error detecting sensor type");
		return -1;
	}

	/* Ugh. The first two bits are the version bits, but
	 * the entire register value must be used. I guess OVT
	 * underestimated how many variants they would make. */
	switch (rc) {
	case 0x00:
		sd->sensor = SEN_OV6630;
		PDEBUG(D_ERR,
			"WARNING: Sensor is an OV66308. Your camera may have");
		PDEBUG(D_ERR, "been misdetected in previous driver versions.");
		break;
	case 0x01:
		sd->sensor = SEN_OV6620;
		break;
	case 0x02:
		sd->sensor = SEN_OV6630;
		PDEBUG(D_PROBE, "Sensor is an OV66308AE");
		break;
	case 0x03:
		sd->sensor = SEN_OV6630;
		PDEBUG(D_PROBE, "Sensor is an OV66308AF");
		break;
	case 0x90:
		sd->sensor = SEN_OV6630;
		PDEBUG(D_ERR,
			"WARNING: Sensor is an OV66307. Your camera may have");
		PDEBUG(D_ERR, "been misdetected in previous driver versions.");
		break;
	default:
		PDEBUG(D_ERR, "FATAL: Unknown sensor version: 0x%02x", rc);
		return -1;
	}

	/* Set sensor-specific vars */
	sd->sif = 1;

	return 0;
}

/* Turns on or off the LED. Only has an effect with OV511+/OV518(+)/OV519 */
static void ov51x_led_control(struct sd *sd, int on)
{
/*	PDEBUG(D_STREAM, "LED (%s)", on ? "on" : "off"); */
	reg_w_mask(sd, OV519_GPIO_DATA_OUT0, !on, 1);	/* 0 / 1 */
}

/* 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;

	static const struct ov_regvals init_519[] = {
		{ 0x5a,  0x6d }, /* EnableSystem */
		{ 0x53,  0x9b },
		{ 0x54,  0xff }, /* set bit2 to enable jpeg */
		{ 0x5d,  0x03 },
		{ 0x49,  0x01 },
		{ 0x48,  0x00 },
		/* Set LED pin to output mode. Bit 4 must be cleared or sensor
		 * detection will fail. This deserves further investigation. */
		{ OV519_GPIO_IO_CTRL0,   0xee },
		{ 0x51,  0x0f }, /* SetUsbInit */
		{ 0x51,  0x00 },
		{ 0x22,  0x00 },
		/* windows reads 0x55 at this point*/
	};

	if (write_regvals(sd, init_519, ARRAY_SIZE(init_519)))
		goto error;
	ov51x_led_control(sd, 0);	/* turn LED off */

	/* Test for 76xx */
	if (ov51x_set_slave_ids(sd, OV7xx0_SID) < 0)
		goto error;

	/* The OV519 must be more aggressive about sensor detection since
	 * I2C write will never fail if the sensor is not present. We have
	 * to try to initialize the sensor to detect its presence */
	if (init_ov_sensor(sd) >= 0) {
		if (ov7xx0_configure(sd) < 0) {
			PDEBUG(D_ERR, "Failed to configure OV7xx0");
			goto error;
		}
	} else {

		/* Test for 6xx0 */
		if (ov51x_set_slave_ids(sd, OV6xx0_SID) < 0)
			goto error;

		if (init_ov_sensor(sd) >= 0) {
			if (ov6xx0_configure(sd) < 0) {
				PDEBUG(D_ERR, "Failed to configure OV6xx0");
				goto error;
			}
		} else {

			/* Test for 8xx0 */
			if (ov51x_set_slave_ids(sd, OV8xx0_SID) < 0)
				goto error;

			if (init_ov_sensor(sd) < 0) {
				PDEBUG(D_ERR,
					"Can't determine sensor slave IDs");
				goto error;
			}
			if (ov8xx0_configure(sd) < 0) {
				PDEBUG(D_ERR,
				   "Failed to configure OV8xx0 sensor");
				goto error;
			}
		}
	}

	cam = &gspca_dev->cam;
	cam->epaddr = OV511_ENDPOINT_ADDRESS;
	if (!sd->sif) {
		cam->cam_mode = vga_mode;
		cam->nmodes = ARRAY_SIZE(vga_mode);
	} else {
		cam->cam_mode = sif_mode;
		cam->nmodes = ARRAY_SIZE(sif_mode);
	}
	sd->brightness = BRIGHTNESS_DEF;
	sd->contrast = CONTRAST_DEF;
	sd->colors = COLOR_DEF;
	sd->hflip = HFLIP_DEF;
	sd->vflip = VFLIP_DEF;
	if (sd->sensor != SEN_OV7670)
		gspca_dev->ctrl_dis = (1 << HFLIP_IDX)
					| (1 << VFLIP_IDX);
	return 0;
error:
	PDEBUG(D_ERR, "OV519 Config failed");
	return -EBUSY;
}

/* 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;

	/* initialize the sensor */
	switch (sd->sensor) {
	case SEN_OV6620:
		if (write_i2c_regvals(sd, norm_6x20, ARRAY_SIZE(norm_6x20)))
			return -EIO;
		break;
	case SEN_OV6630:
		if (write_i2c_regvals(sd, norm_6x30, ARRAY_SIZE(norm_6x30)))
			return -EIO;
		break;
	default:
/*	case SEN_OV7610: */
/*	case SEN_OV76BE: */
		if (write_i2c_regvals(sd, norm_7610, ARRAY_SIZE(norm_7610)))
			return -EIO;
		break;
	case SEN_OV7620:
		if (write_i2c_regvals(sd, norm_7620, ARRAY_SIZE(norm_7620)))
			return -EIO;
		break;
	case SEN_OV7640:
		if (write_i2c_regvals(sd, norm_7640, ARRAY_SIZE(norm_7640)))
			return -EIO;
		break;
	case SEN_OV7670:
		if (write_i2c_regvals(sd, norm_7670, ARRAY_SIZE(norm_7670)))
			return -EIO;
		break;
	case SEN_OV8610:
		if (write_i2c_regvals(sd, norm_8610, ARRAY_SIZE(norm_8610)))
			return -EIO;
		break;
	}
	return 0;
}

/* Sets up the OV519 with the given image parameters
 *
 * OV519 needs a completely different approach, until we can figure out what
 * the individual registers do.
 *
 * Do not put any sensor-specific code in here (including I2C I/O functions)
 */
static int ov519_mode_init_regs(struct sd *sd)
{
	static const struct ov_regvals mode_init_519_ov7670[] = {
		{ 0x5d,	0x03 }, /* Turn off suspend mode */
		{ 0x53,	0x9f }, /* was 9b in 1.65-1.08 */
		{ 0x54,	0x0f }, /* bit2 (jpeg enable) */
		{ 0xa2,	0x20 }, /* a2-a5 are undocumented */
		{ 0xa3,	0x18 },
		{ 0xa4,	0x04 },
		{ 0xa5,	0x28 },
		{ 0x37,	0x00 },	/* SetUsbInit */
		{ 0x55,	0x02 }, /* 4.096 Mhz audio clock */
		/* Enable both fields, YUV Input, disable defect comp (why?) */
		{ 0x20,	0x0c },
		{ 0x21,	0x38 },
		{ 0x22,	0x1d },
		{ 0x17,	0x50 }, /* undocumented */
		{ 0x37,	0x00 }, /* undocumented */
		{ 0x40,	0xff }, /* I2C timeout counter */
		{ 0x46,	0x00 }, /* I2C clock prescaler */
		{ 0x59,	0x04 },	/* new from windrv 090403 */
		{ 0xff,	0x00 }, /* undocumented */
		/* windows reads 0x55 at this point, why? */
	};

	static const struct ov_regvals mode_init_519[] = {
		{ 0x5d,	0x03 }, /* Turn off suspend mode */
		{ 0x53,	0x9f }, /* was 9b in 1.65-1.08 */
		{ 0x54,	0x0f }, /* bit2 (jpeg enable) */
		{ 0xa2,	0x20 }, /* a2-a5 are undocumented */
		{ 0xa3,	0x18 },
		{ 0xa4,	0x04 },
		{ 0xa5,	0x28 },
		{ 0x37,	0x00 },	/* SetUsbInit */
		{ 0x55,	0x02 }, /* 4.096 Mhz audio clock */
		/* Enable both fields, YUV Input, disable defect comp (why?) */
		{ 0x22,	0x1d },
		{ 0x17,	0x50 }, /* undocumented */
		{ 0x37,	0x00 }, /* undocumented */
		{ 0x40,	0xff }, /* I2C timeout counter */
		{ 0x46,	0x00 }, /* I2C clock prescaler */
		{ 0x59,	0x04 },	/* new from windrv 090403 */
		{ 0xff,	0x00 }, /* undocumented */
		/* windows reads 0x55 at this point, why? */
	};

	/******** Set the mode ********/
	if (sd->sensor != SEN_OV7670) {
		if (write_regvals(sd, mode_init_519,
				  ARRAY_SIZE(mode_init_519)))
			return -EIO;
		if (sd->sensor == SEN_OV7640) {
			/* Select 8-bit input mode */
			reg_w_mask(sd, OV519_CAM_DFR, 0x10, 0x10);
		}
	} else {
		if (write_regvals(sd, mode_init_519_ov7670,
				  ARRAY_SIZE(mode_init_519_ov7670)))
			return -EIO;
	}

	reg_w(sd, OV519_CAM_H_SIZE,	sd->gspca_dev.width >> 4);
	reg_w(sd, OV519_CAM_V_SIZE,	sd->gspca_dev.height >> 3);
	reg_w(sd, OV519_CAM_X_OFFSETL,	0x00);
	reg_w(sd, OV519_CAM_X_OFFSETH,	0x00);
	reg_w(sd, OV519_CAM_Y_OFFSETL,	0x00);
	reg_w(sd, OV519_CAM_Y_OFFSETH,	0x00);
	reg_w(sd, OV519_CAM_DIVIDER,	0x00);
	reg_w(sd, OV519_CAM_FORMAT,	0x03); /* YUV422 */
	reg_w(sd, 0x26,			0x00); /* Undocumented */

	/******** Set the framerate ********/
	if (frame_rate > 0)
		sd->frame_rate = frame_rate;

/* FIXME: These are only valid at the max resolution. */
	sd->clockdiv = 0;
	switch (sd->sensor) {
	case SEN_OV7640:
		switch (sd->frame_rate) {
/*fixme: default was 30 fps */
		case 30:
			reg_w(sd, 0xa4, 0x0c);
			reg_w(sd, 0x23, 0xff);
			break;
		case 25:
			reg_w(sd, 0xa4, 0x0c);
			reg_w(sd, 0x23, 0x1f);
			break;
		case 20:
			reg_w(sd, 0xa4, 0x0c);
			reg_w(sd, 0x23, 0x1b);
			break;
		default:
/*		case 15: */
			reg_w(sd, 0xa4, 0x04);
			reg_w(sd, 0x23, 0xff);
			sd->clockdiv = 1;
			break;
		case 10:
			reg_w(sd, 0xa4, 0x04);
			reg_w(sd, 0x23, 0x1f);
			sd->clockdiv = 1;
			break;
		case 5:
			reg_w(sd, 0xa4, 0x04);
			reg_w(sd, 0x23, 0x1b);
			sd->clockdiv = 1;
			break;
		}
		break;
	case SEN_OV8610:
		switch (sd->frame_rate) {
		default:	/* 15 fps */
/*		case 15: */
			reg_w(sd, 0xa4, 0x06);
			reg_w(sd, 0x23, 0xff);
			break;
		case 10:
			reg_w(sd, 0xa4, 0x06);
			reg_w(sd, 0x23, 0x1f);
			break;
		case 5:
			reg_w(sd, 0xa4, 0x06);
			reg_w(sd, 0x23, 0x1b);
			break;
		}
		break;
	case SEN_OV7670:		/* guesses, based on 7640 */
		PDEBUG(D_STREAM, "Setting framerate to %d fps",
				 (sd->frame_rate == 0) ? 15 : sd->frame_rate);
		reg_w(sd, 0xa4, 0x10);
		switch (sd->frame_rate) {
		case 30:
			reg_w(sd, 0x23, 0xff);
			break;
		case 20:
			reg_w(sd, 0x23, 0x1b);
			break;
		default:
/*		case 15: */
			reg_w(sd, 0x23, 0xff);
			sd->clockdiv = 1;
			break;
		}
		break;
	}

	return 0;
}

static int mode_init_ov_sensor_regs(struct sd *sd)
{
	struct gspca_dev *gspca_dev;
	int qvga;

	gspca_dev = &sd->gspca_dev;
	qvga = gspca_dev->cam.cam_mode[(int) gspca_dev->curr_mode].priv;

	/******** Mode (VGA/QVGA) and sensor specific regs ********/
	switch (sd->sensor) {
	case SEN_OV8610:
		/* For OV8610 qvga means qsvga */
		i2c_w_mask(sd, OV7610_REG_COM_C, qvga ? (1 << 5) : 0, 1 << 5);
#if 0
		/* FIXME: Does this improve the image quality or frame rate? */
		i2c_w_mask(sd, 0x28, qvga ? 0x00 : 0x20, 0x20);
		i2c_w(sd, 0x24, 0x10);
		i2c_w(sd, 0x25, qvga ? 0x40 : 0x8a);
		i2c_w(sd, 0x2f, qvga ? 0x30 : 0xb0);
		i2c_w(sd, 0x35, qvga ? 0x1c : 0x9c);
#endif
		break;
	case SEN_OV7610:
		i2c_w_mask(sd, 0x14, qvga ? 0x20 : 0x00, 0x20);
#if 0
		/* FIXME: Does this improve the image quality or frame rate? */
		i2c_w_mask(sd, 0x28, qvga?0x00:0x20, 0x20);
		i2c_w(sd, 0x24, 0x10);
		i2c_w(sd, 0x25, qvga?0x40:0x8a);
		i2c_w(sd, 0x2f, qvga?0x30:0xb0);
		i2c_w(sd, 0x35, qvga?0x1c:0x9c);
#endif
		break;
	case SEN_OV7620:
/*		i2c_w(sd, 0x2b, 0x00); */
		i2c_w_mask(sd, 0x14, qvga ? 0x20 : 0x00, 0x20);
		i2c_w_mask(sd, 0x28, qvga ? 0x00 : 0x20, 0x20);
		i2c_w(sd, 0x24, qvga ? 0x20 : 0x3a);
		i2c_w(sd, 0x25, qvga ? 0x30 : 0x60);
		i2c_w_mask(sd, 0x2d, qvga ? 0x40 : 0x00, 0x40);
		i2c_w_mask(sd, 0x67, qvga ? 0xf0 : 0x90, 0xf0);
		i2c_w_mask(sd, 0x74, qvga ? 0x20 : 0x00, 0x20);
		break;
	case SEN_OV76BE:
/*		i2c_w(sd, 0x2b, 0x00); */
		i2c_w_mask(sd, 0x14, qvga ? 0x20 : 0x00, 0x20);
#if 0
		/* FIXME: Enable this once 7620AE uses 7620 initial settings */
		i2c_w_mask(sd, 0x28, qvga ? 0x00 : 0x20, 0x20);
		i2c_w(sd, 0x24, qvga ? 0x20 : 0x3a);
		i2c_w(sd, 0x25, qvga ? 0x30 : 0x60);
		i2c_w_mask(sd, 0x2d, qvga ? 0x40 : 0x00, 0x40);
		i2c_w_mask(sd, 0x67, qvga ? 0xb0 : 0x90, 0xf0);
		i2c_w_mask(sd, 0x74, qvga ? 0x20 : 0x00, 0x20);
#endif
		break;
	case SEN_OV7640:
/*		i2c_w(sd, 0x2b, 0x00); */
		i2c_w_mask(sd, 0x14, qvga ? 0x20 : 0x00, 0x20);
		i2c_w_mask(sd, 0x28, qvga ? 0x00 : 0x20, 0x20);
/*		i2c_w(sd, 0x24, qvga ? 0x20 : 0x3a); */
/*		i2c_w(sd, 0x25, qvga ? 0x30 : 0x60); */
/*		i2c_w_mask(sd, 0x2d, qvga ? 0x40 : 0x00, 0x40); */
/*		i2c_w_mask(sd, 0x67, qvga ? 0xf0 : 0x90, 0xf0); */
/*		i2c_w_mask(sd, 0x74, qvga ? 0x20 : 0x00, 0x20); */
		break;
	case SEN_OV7670:
		/* set COM7_FMT_VGA or COM7_FMT_QVGA
		 * do we need to set anything else?
		 *	HSTART etc are set in set_ov_sensor_window itself */
		i2c_w_mask(sd, OV7670_REG_COM7,
			 qvga ? OV7670_COM7_FMT_QVGA : OV7670_COM7_FMT_VGA,
			 OV7670_COM7_FMT_MASK);
		break;
	case SEN_OV6620:
	case SEN_OV6630:
		i2c_w_mask(sd, 0x14, qvga ? 0x20 : 0x00, 0x20);
		break;
	default:
		return -EINVAL;
	}

	/******** Palette-specific regs ********/
	if (sd->sensor == SEN_OV7610 || sd->sensor == SEN_OV76BE) {
		/* not valid on the OV6620/OV7620/6630? */
		i2c_w_mask(sd, 0x0e, 0x00, 0x40);
	}

	/* The OV518 needs special treatment. Although both the OV518
	 * and the OV6630 support a 16-bit video bus, only the 8 bit Y
	 * bus is actually used. The UV bus is tied to ground.
	 * Therefore, the OV6630 needs to be in 8-bit multiplexed