[mirror_ubuntu-jammy-kernel.git] / drivers / media / usb / gspca / m5602 / m5602_po1030.c

// SPDX-License-Identifier: GPL-2.0-only
/*
 * Driver for the po1030 sensor
 *
 * Copyright (c) 2008 Erik Andrén
 * Copyright (c) 2007 Ilyes Gouta. Based on the m5603x Linux Driver Project.
 * Copyright (c) 2005 m5603x Linux Driver Project <m5602@x3ng.com.br>
 *
 * Portions of code to USB interface and ALi driver software,
 * Copyright (c) 2006 Willem Duinker
 * v4l2 interface modeled after the V4L2 driver
 * for SN9C10x PC Camera Controllers
 */

#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt

#include "m5602_po1030.h"

static int po1030_s_ctrl(struct v4l2_ctrl *ctrl);
static void po1030_dump_registers(struct sd *sd);

static const unsigned char preinit_po1030[][3] = {
	{BRIDGE, M5602_XB_MCU_CLK_DIV, 0x02},
	{BRIDGE, M5602_XB_MCU_CLK_CTRL, 0xb0},
	{BRIDGE, M5602_XB_SEN_CLK_DIV, 0x00},
	{BRIDGE, M5602_XB_SEN_CLK_CTRL, 0xb0},
	{BRIDGE, M5602_XB_ADC_CTRL, 0xc0},
	{BRIDGE, M5602_XB_SENSOR_CTRL, 0x00},
	{BRIDGE, M5602_XB_SENSOR_TYPE, 0x0c},
	{BRIDGE, M5602_XB_ADC_CTRL, 0xc0},
	{BRIDGE, M5602_XB_GPIO_DIR, 0x05},
	{BRIDGE, M5602_XB_GPIO_DAT, 0x04},
	{BRIDGE, M5602_XB_GPIO_EN_H, 0x06},
	{BRIDGE, M5602_XB_GPIO_DIR_H, 0x06},
	{BRIDGE, M5602_XB_GPIO_DAT_H, 0x02},

	{SENSOR, PO1030_AUTOCTRL2, PO1030_SENSOR_RESET | (1 << 2)},

	{BRIDGE, M5602_XB_SEN_CLK_DIV, 0x04},
	{BRIDGE, M5602_XB_SEN_CLK_CTRL, 0xb0},
	{BRIDGE, M5602_XB_SEN_CLK_DIV, 0x00},
	{BRIDGE, M5602_XB_SEN_CLK_CTRL, 0xb0},
	{BRIDGE, M5602_XB_SENSOR_TYPE, 0x0c},
	{BRIDGE, M5602_XB_GPIO_DIR, 0x05},
	{BRIDGE, M5602_XB_GPIO_DAT, 0x00}
};

static const unsigned char init_po1030[][3] = {
	{BRIDGE, M5602_XB_MCU_CLK_DIV, 0x02},
	{BRIDGE, M5602_XB_MCU_CLK_CTRL, 0xb0},
	{BRIDGE, M5602_XB_SEN_CLK_DIV, 0x00},
	{BRIDGE, M5602_XB_SEN_CLK_CTRL, 0xb0},
	{BRIDGE, M5602_XB_ADC_CTRL, 0xc0},
	{BRIDGE, M5602_XB_SENSOR_CTRL, 0x00},
	{BRIDGE, M5602_XB_SENSOR_TYPE, 0x0c},

	{SENSOR, PO1030_AUTOCTRL2, PO1030_SENSOR_RESET | (1 << 2)},

	{BRIDGE, M5602_XB_GPIO_DIR, 0x05},
	{BRIDGE, M5602_XB_GPIO_DAT, 0x04},
	{BRIDGE, M5602_XB_GPIO_EN_H, 0x06},
	{BRIDGE, M5602_XB_GPIO_EN_L, 0x00},
	{BRIDGE, M5602_XB_GPIO_DIR_H, 0x06},
	{BRIDGE, M5602_XB_GPIO_DAT_H, 0x02},
	{BRIDGE, M5602_XB_SEN_CLK_DIV, 0x04},
	{BRIDGE, M5602_XB_SEN_CLK_CTRL, 0xb0},
	{BRIDGE, M5602_XB_GPIO_DIR, 0x05},
	{BRIDGE, M5602_XB_GPIO_DAT, 0x00},

	{SENSOR, PO1030_AUTOCTRL2, 0x04},

	{SENSOR, PO1030_OUTFORMCTRL2, PO1030_RAW_RGB_BAYER},
	{SENSOR, PO1030_AUTOCTRL1, PO1030_WEIGHT_WIN_2X},

	{SENSOR, PO1030_CONTROL2, 0x03},
	{SENSOR, 0x21, 0x90},
	{SENSOR, PO1030_YTARGET, 0x60},
	{SENSOR, 0x59, 0x13},
	{SENSOR, PO1030_OUTFORMCTRL1, PO1030_HREF_ENABLE},
	{SENSOR, PO1030_EDGE_ENH_OFF, 0x00},
	{SENSOR, PO1030_EGA, 0x80},
	{SENSOR, 0x78, 0x14},
	{SENSOR, 0x6f, 0x01},
	{SENSOR, PO1030_GLOBALGAINMAX, 0x14},
	{SENSOR, PO1030_Cb_U_GAIN, 0x38},
	{SENSOR, PO1030_Cr_V_GAIN, 0x38},
	{SENSOR, PO1030_CONTROL1, PO1030_SHUTTER_MODE |
				  PO1030_AUTO_SUBSAMPLING |
				  PO1030_FRAME_EQUAL},
	{SENSOR, PO1030_GC0, 0x10},
	{SENSOR, PO1030_GC1, 0x20},
	{SENSOR, PO1030_GC2, 0x40},
	{SENSOR, PO1030_GC3, 0x60},
	{SENSOR, PO1030_GC4, 0x80},
	{SENSOR, PO1030_GC5, 0xa0},
	{SENSOR, PO1030_GC6, 0xc0},
	{SENSOR, PO1030_GC7, 0xff},

	/* Set the width to 751 */
	{SENSOR, PO1030_FRAMEWIDTH_H, 0x02},
	{SENSOR, PO1030_FRAMEWIDTH_L, 0xef},

	/* Set the height to 540 */
	{SENSOR, PO1030_FRAMEHEIGHT_H, 0x02},
	{SENSOR, PO1030_FRAMEHEIGHT_L, 0x1c},

	/* Set the x window to 1 */
	{SENSOR, PO1030_WINDOWX_H, 0x00},
	{SENSOR, PO1030_WINDOWX_L, 0x01},

	/* Set the y window to 1 */
	{SENSOR, PO1030_WINDOWY_H, 0x00},
	{SENSOR, PO1030_WINDOWY_L, 0x01},

	/* with a very low lighted environment increase the exposure but
	 * decrease the FPS (Frame Per Second) */
	{BRIDGE, M5602_XB_SEN_CLK_DIV, 0x00},
	{BRIDGE, M5602_XB_SEN_CLK_CTRL, 0xb0},

	{BRIDGE, M5602_XB_GPIO_DIR, 0x05},
	{BRIDGE, M5602_XB_GPIO_DAT, 0x00},
	{BRIDGE, M5602_XB_GPIO_EN_H, 0x06},
	{BRIDGE, M5602_XB_GPIO_EN_L, 0x00},
};

static struct v4l2_pix_format po1030_modes[] = {
	{
		640,
		480,
		V4L2_PIX_FMT_SBGGR8,
		V4L2_FIELD_NONE,
		.sizeimage = 640 * 480,
		.bytesperline = 640,
		.colorspace = V4L2_COLORSPACE_SRGB,
		.priv = 2
	}
};

static const struct v4l2_ctrl_ops po1030_ctrl_ops = {
	.s_ctrl = po1030_s_ctrl,
};

static const struct v4l2_ctrl_config po1030_greenbal_cfg = {
	.ops	= &po1030_ctrl_ops,
	.id	= M5602_V4L2_CID_GREEN_BALANCE,
	.name	= "Green Balance",
	.type	= V4L2_CTRL_TYPE_INTEGER,
	.min	= 0,
	.max	= 255,
	.step	= 1,
	.def	= PO1030_GREEN_GAIN_DEFAULT,
	.flags	= V4L2_CTRL_FLAG_SLIDER,
};

int po1030_probe(struct sd *sd)
{
	int rc = 0;
	u8 dev_id_h = 0, i;
	struct gspca_dev *gspca_dev = (struct gspca_dev *)sd;

	if (force_sensor) {
		if (force_sensor == PO1030_SENSOR) {
			pr_info("Forcing a %s sensor\n", po1030.name);
			goto sensor_found;
		}
		/* If we want to force another sensor, don't try to probe this
		 * one */
		return -ENODEV;
	}

	gspca_dbg(gspca_dev, D_PROBE, "Probing for a po1030 sensor\n");

	/* Run the pre-init to actually probe the unit */
	for (i = 0; i < ARRAY_SIZE(preinit_po1030); i++) {
		u8 data = preinit_po1030[i][2];
		if (preinit_po1030[i][0] == SENSOR)
			rc |= m5602_write_sensor(sd,
				preinit_po1030[i][1], &data, 1);
		else
			rc |= m5602_write_bridge(sd, preinit_po1030[i][1],
						data);
	}
	if (rc < 0)
		return rc;

	if (m5602_read_sensor(sd, PO1030_DEVID_H, &dev_id_h, 1))
		return -ENODEV;

	if (dev_id_h == 0x30) {
		pr_info("Detected a po1030 sensor\n");
		goto sensor_found;
	}
	return -ENODEV;

sensor_found:
	sd->gspca_dev.cam.cam_mode = po1030_modes;
	sd->gspca_dev.cam.nmodes = ARRAY_SIZE(po1030_modes);

	return 0;
}

int po1030_init(struct sd *sd)
{
	int i, err = 0;

	/* Init the sensor */
	for (i = 0; i < ARRAY_SIZE(init_po1030) && !err; i++) {
		u8 data[2] = {0x00, 0x00};

		switch (init_po1030[i][0]) {
		case BRIDGE:
			err = m5602_write_bridge(sd,
				init_po1030[i][1],
				init_po1030[i][2]);
			break;

		case SENSOR:
			data[0] = init_po1030[i][2];
			err = m5602_write_sensor(sd,
				init_po1030[i][1], data, 1);
			break;

		default:
			pr_info("Invalid stream command, exiting init\n");
			return -EINVAL;
		}
	}
	if (err < 0)
		return err;

	if (dump_sensor)
		po1030_dump_registers(sd);

	return 0;
}

int po1030_init_controls(struct sd *sd)
{
	struct v4l2_ctrl_handler *hdl = &sd->gspca_dev.ctrl_handler;

	sd->gspca_dev.vdev.ctrl_handler = hdl;
	v4l2_ctrl_handler_init(hdl, 9);

	sd->auto_white_bal = v4l2_ctrl_new_std(hdl, &po1030_ctrl_ops,
					       V4L2_CID_AUTO_WHITE_BALANCE,
					       0, 1, 1, 0);
	sd->green_bal = v4l2_ctrl_new_custom(hdl, &po1030_greenbal_cfg, NULL);
	sd->red_bal = v4l2_ctrl_new_std(hdl, &po1030_ctrl_ops,
					V4L2_CID_RED_BALANCE, 0, 255, 1,
					PO1030_RED_GAIN_DEFAULT);
	sd->blue_bal = v4l2_ctrl_new_std(hdl, &po1030_ctrl_ops,
					V4L2_CID_BLUE_BALANCE, 0, 255, 1,
					PO1030_BLUE_GAIN_DEFAULT);

	sd->autoexpo = v4l2_ctrl_new_std_menu(hdl, &po1030_ctrl_ops,
			  V4L2_CID_EXPOSURE_AUTO, 1, 0, V4L2_EXPOSURE_MANUAL);
	sd->expo = v4l2_ctrl_new_std(hdl, &po1030_ctrl_ops, V4L2_CID_EXPOSURE,
			  0, 0x2ff, 1, PO1030_EXPOSURE_DEFAULT);

	sd->gain = v4l2_ctrl_new_std(hdl, &po1030_ctrl_ops, V4L2_CID_GAIN, 0,
				     0x4f, 1, PO1030_GLOBAL_GAIN_DEFAULT);

	sd->hflip = v4l2_ctrl_new_std(hdl, &po1030_ctrl_ops, V4L2_CID_HFLIP,
				      0, 1, 1, 0);
	sd->vflip = v4l2_ctrl_new_std(hdl, &po1030_ctrl_ops, V4L2_CID_VFLIP,
				      0, 1, 1, 0);

	if (hdl->error) {
		pr_err("Could not initialize controls\n");
		return hdl->error;
	}

	v4l2_ctrl_auto_cluster(4, &sd->auto_white_bal, 0, false);
	v4l2_ctrl_auto_cluster(2, &sd->autoexpo, 0, false);
	v4l2_ctrl_cluster(2, &sd->hflip);

	return 0;
}

int po1030_start(struct sd *sd)
{
	struct cam *cam = &sd->gspca_dev.cam;
	int i, err = 0;
	int width = cam->cam_mode[sd->gspca_dev.curr_mode].width;
	int height = cam->cam_mode[sd->gspca_dev.curr_mode].height;
	int ver_offs = cam->cam_mode[sd->gspca_dev.curr_mode].priv;
	u8 data;

	switch (width) {
	case 320:
		data = PO1030_SUBSAMPLING;
		err = m5602_write_sensor(sd, PO1030_CONTROL3, &data, 1);
		if (err < 0)
			return err;

		data = ((width + 3) >> 8) & 0xff;
		err = m5602_write_sensor(sd, PO1030_WINDOWWIDTH_H, &data, 1);
		if (err < 0)
			return err;

		data = (width + 3) & 0xff;
		err = m5602_write_sensor(sd, PO1030_WINDOWWIDTH_L, &data, 1);
		if (err < 0)
			return err;

		data = ((height + 1) >> 8) & 0xff;
		err = m5602_write_sensor(sd, PO1030_WINDOWHEIGHT_H, &data, 1);
		if (err < 0)
			return err;

		data = (height + 1) & 0xff;
		err = m5602_write_sensor(sd, PO1030_WINDOWHEIGHT_L, &data, 1);

		height += 6;
		width -= 1;
		break;

	case 640:
		data = 0;
		err = m5602_write_sensor(sd, PO1030_CONTROL3, &data, 1);
		if (err < 0)
			return err;

		data = ((width + 7) >> 8) & 0xff;
		err = m5602_write_sensor(sd, PO1030_WINDOWWIDTH_H, &data, 1);
		if (err < 0)
			return err;

		data = (width + 7) & 0xff;
		err = m5602_write_sensor(sd, PO1030_WINDOWWIDTH_L, &data, 1);
		if (err < 0)
			return err;

		data = ((height + 3) >> 8) & 0xff;
		err = m5602_write_sensor(sd, PO1030_WINDOWHEIGHT_H, &data, 1);
		if (err < 0)
			return err;

		data = (height + 3) & 0xff;
		err = m5602_write_sensor(sd, PO1030_WINDOWHEIGHT_L, &data, 1);

		height += 12;
		width -= 2;
		break;
	}
	err = m5602_write_bridge(sd, M5602_XB_SENSOR_TYPE, 0x0c);
	if (err < 0)
		return err;

	err = m5602_write_bridge(sd, M5602_XB_LINE_OF_FRAME_H, 0x81);
	if (err < 0)
		return err;

	err = m5602_write_bridge(sd, M5602_XB_PIX_OF_LINE_H, 0x82);
	if (err < 0)
		return err;

	err = m5602_write_bridge(sd, M5602_XB_SIG_INI, 0x01);
	if (err < 0)
		return err;

	err = m5602_write_bridge(sd, M5602_XB_VSYNC_PARA,
				 ((ver_offs >> 8) & 0xff));
	if (err < 0)
		return err;

	err = m5602_write_bridge(sd, M5602_XB_VSYNC_PARA, (ver_offs & 0xff));
	if (err < 0)
		return err;

	for (i = 0; i < 2 && !err; i++)
		err = m5602_write_bridge(sd, M5602_XB_VSYNC_PARA, 0);
	if (err < 0)
		return err;

	err = m5602_write_bridge(sd, M5602_XB_VSYNC_PARA, (height >> 8) & 0xff);
	if (err < 0)
		return err;

	err = m5602_write_bridge(sd, M5602_XB_VSYNC_PARA, (height & 0xff));
	if (err < 0)
		return err;

	for (i = 0; i < 2 && !err; i++)
		err = m5602_write_bridge(sd, M5602_XB_VSYNC_PARA, 0);

	for (i = 0; i < 2 && !err; i++)
		err = m5602_write_bridge(sd, M5602_XB_SIG_INI, 0);

	for (i = 0; i < 2 && !err; i++)
		err = m5602_write_bridge(sd, M5602_XB_HSYNC_PARA, 0);
	if (err < 0)
		return err;

	err = m5602_write_bridge(sd, M5602_XB_HSYNC_PARA, (width >> 8) & 0xff);
	if (err < 0)
		return err;

	err = m5602_write_bridge(sd, M5602_XB_HSYNC_PARA, (width & 0xff));
	if (err < 0)
		return err;

	err = m5602_write_bridge(sd, M5602_XB_SIG_INI, 0);
	return err;
}

static int po1030_set_exposure(struct gspca_dev *gspca_dev, __s32 val)
{
	struct sd *sd = (struct sd *) gspca_dev;
	u8 i2c_data;
	int err;

	gspca_dbg(gspca_dev, D_CONF, "Set exposure to %d\n", val & 0xffff);

	i2c_data = ((val & 0xff00) >> 8);
	gspca_dbg(gspca_dev, D_CONF, "Set exposure to high byte to 0x%x\n",
		  i2c_data);

	err = m5602_write_sensor(sd, PO1030_INTEGLINES_H,
				  &i2c_data, 1);
	if (err < 0)
		return err;

	i2c_data = (val & 0xff);
	gspca_dbg(gspca_dev, D_CONF, "Set exposure to low byte to 0x%x\n",
		  i2c_data);
	err = m5602_write_sensor(sd, PO1030_INTEGLINES_M,
				  &i2c_data, 1);

	return err;
}

static int po1030_set_gain(struct gspca_dev *gspca_dev, __s32 val)
{
	struct sd *sd = (struct sd *) gspca_dev;
	u8 i2c_data;
	int err;

	i2c_data = val & 0xff;
	gspca_dbg(gspca_dev, D_CONF, "Set global gain to %d\n", i2c_data);
	err = m5602_write_sensor(sd, PO1030_GLOBALGAIN,
				 &i2c_data, 1);
	return err;
}

static int po1030_set_hvflip(struct gspca_dev *gspca_dev)
{
	struct sd *sd = (struct sd *) gspca_dev;
	u8 i2c_data;
	int err;

	gspca_dbg(gspca_dev, D_CONF, "Set hvflip %d %d\n",
		  sd->hflip->val, sd->vflip->val);
	err = m5602_read_sensor(sd, PO1030_CONTROL2, &i2c_data, 1);
	if (err < 0)
		return err;

	i2c_data = (0x3f & i2c_data) | (sd->hflip->val << 7) |
		   (sd->vflip->val << 6);

	err = m5602_write_sensor(sd, PO1030_CONTROL2,
				 &i2c_data, 1);

	return err;
}

static int po1030_set_red_balance(struct gspca_dev *gspca_dev, __s32 val)
{
	struct sd *sd = (struct sd *) gspca_dev;
	u8 i2c_data;
	int err;

	i2c_data = val & 0xff;
	gspca_dbg(gspca_dev, D_CONF, "Set red gain to %d\n", i2c_data);
	err = m5602_write_sensor(sd, PO1030_RED_GAIN,
				  &i2c_data, 1);
	return err;
}

static int po1030_set_blue_balance(struct gspca_dev *gspca_dev, __s32 val)
{
	struct sd *sd = (struct sd *) gspca_dev;
	u8 i2c_data;
	int err;

	i2c_data = val & 0xff;
	gspca_dbg(gspca_dev, D_CONF, "Set blue gain to %d\n", i2c_data);
	err = m5602_write_sensor(sd, PO1030_BLUE_GAIN,
				  &i2c_data, 1);

	return err;
}

static int po1030_set_green_balance(struct gspca_dev *gspca_dev, __s32 val)
{
	struct sd *sd = (struct sd *) gspca_dev;
	u8 i2c_data;
	int err;

	i2c_data = val & 0xff;
	gspca_dbg(gspca_dev, D_CONF, "Set green gain to %d\n", i2c_data);

	err = m5602_write_sensor(sd, PO1030_GREEN_1_GAIN,
			   &i2c_data, 1);
	if (err < 0)
		return err;

	return m5602_write_sensor(sd, PO1030_GREEN_2_GAIN,
				 &i2c_data, 1);
}

static int po1030_set_auto_white_balance(struct gspca_dev *gspca_dev,
					 __s32 val)
{
	struct sd *sd = (struct sd *) gspca_dev;
	u8 i2c_data;
	int err;

	err = m5602_read_sensor(sd, PO1030_AUTOCTRL1, &i2c_data, 1);
	if (err < 0)
		return err;

	gspca_dbg(gspca_dev, D_CONF, "Set auto white balance to %d\n", val);
	i2c_data = (i2c_data & 0xfe) | (val & 0x01);
	err = m5602_write_sensor(sd, PO1030_AUTOCTRL1, &i2c_data, 1);
	return err;
}

static int po1030_set_auto_exposure(struct gspca_dev *gspca_dev,
				    __s32 val)
{
	struct sd *sd = (struct sd *) gspca_dev;
	u8 i2c_data;
	int err;

	err = m5602_read_sensor(sd, PO1030_AUTOCTRL1, &i2c_data, 1);
	if (err < 0)
		return err;

	gspca_dbg(gspca_dev, D_CONF, "Set auto exposure to %d\n", val);
	val = (val == V4L2_EXPOSURE_AUTO);
	i2c_data = (i2c_data & 0xfd) | ((val & 0x01) << 1);
	return m5602_write_sensor(sd, PO1030_AUTOCTRL1, &i2c_data, 1);
}

void po1030_disconnect(struct sd *sd)
{
	sd->sensor = NULL;
}

static int po1030_s_ctrl(struct v4l2_ctrl *ctrl)
{
	struct gspca_dev *gspca_dev =
		container_of(ctrl->handler, struct gspca_dev, ctrl_handler);
	struct sd *sd = (struct sd *) gspca_dev;
	int err;

	if (!gspca_dev->streaming)
		return 0;

	switch (ctrl->id) {
	case V4L2_CID_AUTO_WHITE_BALANCE:
		err = po1030_set_auto_white_balance(gspca_dev, ctrl->val);
		if (err || ctrl->val)
			return err;
		err = po1030_set_green_balance(gspca_dev, sd->green_bal->val);
		if (err)
			return err;
		err = po1030_set_red_balance(gspca_dev, sd->red_bal->val);
		if (err)
			return err;
		err = po1030_set_blue_balance(gspca_dev, sd->blue_bal->val);
		break;
	case V4L2_CID_EXPOSURE_AUTO:
		err = po1030_set_auto_exposure(gspca_dev, ctrl->val);
		if (err || ctrl->val == V4L2_EXPOSURE_AUTO)
			return err;
		err = po1030_set_exposure(gspca_dev, sd->expo->val);
		break;
	case V4L2_CID_GAIN:
		err = po1030_set_gain(gspca_dev, ctrl->val);
		break;
	case V4L2_CID_HFLIP:
		err = po1030_set_hvflip(gspca_dev);
		break;
	default:
		return -EINVAL;
	}

	return err;
}

static void po1030_dump_registers(struct sd *sd)
{
	int address;
	u8 value = 0;

	pr_info("Dumping the po1030 sensor core registers\n");
	for (address = 0; address < 0x7f; address++) {
		m5602_read_sensor(sd, address, &value, 1);
		pr_info("register 0x%x contains 0x%x\n", address, value);
	}

	pr_info("po1030 register state dump complete\n");

	pr_info("Probing for which registers that are read/write\n");
	for (address = 0; address < 0xff; address++) {
		u8 old_value, ctrl_value;
		u8 test_value[2] = {0xff, 0xff};

		m5602_read_sensor(sd, address, &old_value, 1);
		m5602_write_sensor(sd, address, test_value, 1);
		m5602_read_sensor(sd, address, &ctrl_value, 1);

		if (ctrl_value == test_value[0])
			pr_info("register 0x%x is writeable\n", address);
		else
			pr_info("register 0x%x is read only\n", address);

		/* Restore original value */
		m5602_write_sensor(sd, address, &old_value, 1);
	}
}
Commit	Line	Data
a10e763b	1	// SPDX-License-Identifier: GPL-2.0-only
c109f816 EA	2	/*
	3	* Driver for the po1030 sensor
	4	*
0c505e68	5	* Copyright (c) 2008 Erik Andrén
c109f816 EA	6	* Copyright (c) 2007 Ilyes Gouta. Based on the m5603x Linux Driver Project.
	7	* Copyright (c) 2005 m5603x Linux Driver Project <m5602@x3ng.com.br>
	8	*
	9	* Portions of code to USB interface and ALi driver software,
	10	* Copyright (c) 2006 Willem Duinker
	11	* v4l2 interface modeled after the V4L2 driver
	12	* for SN9C10x PC Camera Controllers
c109f816 EA	13	*/
c109f816 EA	14
bdfe91f4 JP	15	#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
bdfe91f4 JP	16
c109f816 EA	17	#include "m5602_po1030.h"
c109f816 EA	18
c84e412f HG	19	static int po1030_s_ctrl(struct v4l2_ctrl *ctrl);
c84e412f HG	20	static void po1030_dump_registers(struct sd *sd);
cf811d50	21
804c7812 MCC	22	static const unsigned char preinit_po1030[][3] = {
	23	{BRIDGE, M5602_XB_MCU_CLK_DIV, 0x02},
	24	{BRIDGE, M5602_XB_MCU_CLK_CTRL, 0xb0},
	25	{BRIDGE, M5602_XB_SEN_CLK_DIV, 0x00},
	26	{BRIDGE, M5602_XB_SEN_CLK_CTRL, 0xb0},
	27	{BRIDGE, M5602_XB_ADC_CTRL, 0xc0},
	28	{BRIDGE, M5602_XB_SENSOR_CTRL, 0x00},
	29	{BRIDGE, M5602_XB_SENSOR_TYPE, 0x0c},
	30	{BRIDGE, M5602_XB_ADC_CTRL, 0xc0},
	31	{BRIDGE, M5602_XB_GPIO_DIR, 0x05},
	32	{BRIDGE, M5602_XB_GPIO_DAT, 0x04},
	33	{BRIDGE, M5602_XB_GPIO_EN_H, 0x06},
	34	{BRIDGE, M5602_XB_GPIO_DIR_H, 0x06},
	35	{BRIDGE, M5602_XB_GPIO_DAT_H, 0x02},
	36
	37	{SENSOR, PO1030_AUTOCTRL2, PO1030_SENSOR_RESET \| (1 << 2)},
	38
	39	{BRIDGE, M5602_XB_SEN_CLK_DIV, 0x04},
	40	{BRIDGE, M5602_XB_SEN_CLK_CTRL, 0xb0},
	41	{BRIDGE, M5602_XB_SEN_CLK_DIV, 0x00},
	42	{BRIDGE, M5602_XB_SEN_CLK_CTRL, 0xb0},
	43	{BRIDGE, M5602_XB_SENSOR_TYPE, 0x0c},
	44	{BRIDGE, M5602_XB_GPIO_DIR, 0x05},
	45	{BRIDGE, M5602_XB_GPIO_DAT, 0x00}
	46	};
	47
	48	static const unsigned char init_po1030[][3] = {
	49	{BRIDGE, M5602_XB_MCU_CLK_DIV, 0x02},
	50	{BRIDGE, M5602_XB_MCU_CLK_CTRL, 0xb0},
	51	{BRIDGE, M5602_XB_SEN_CLK_DIV, 0x00},
	52	{BRIDGE, M5602_XB_SEN_CLK_CTRL, 0xb0},
	53	{BRIDGE, M5602_XB_ADC_CTRL, 0xc0},
	54	{BRIDGE, M5602_XB_SENSOR_CTRL, 0x00},
	55	{BRIDGE, M5602_XB_SENSOR_TYPE, 0x0c},
	56
	57	{SENSOR, PO1030_AUTOCTRL2, PO1030_SENSOR_RESET \| (1 << 2)},
	58
	59	{BRIDGE, M5602_XB_GPIO_DIR, 0x05},
	60	{BRIDGE, M5602_XB_GPIO_DAT, 0x04},
	61	{BRIDGE, M5602_XB_GPIO_EN_H, 0x06},
	62	{BRIDGE, M5602_XB_GPIO_EN_L, 0x00},
	63	{BRIDGE, M5602_XB_GPIO_DIR_H, 0x06},
	64	{BRIDGE, M5602_XB_GPIO_DAT_H, 0x02},
	65	{BRIDGE, M5602_XB_SEN_CLK_DIV, 0x04},
	66	{BRIDGE, M5602_XB_SEN_CLK_CTRL, 0xb0},
	67	{BRIDGE, M5602_XB_GPIO_DIR, 0x05},
	68	{BRIDGE, M5602_XB_GPIO_DAT, 0x00},
	69
	70	{SENSOR, PO1030_AUTOCTRL2, 0x04},
	71
	72	{SENSOR, PO1030_OUTFORMCTRL2, PO1030_RAW_RGB_BAYER},
	73	{SENSOR, PO1030_AUTOCTRL1, PO1030_WEIGHT_WIN_2X},
	74
	75	{SENSOR, PO1030_CONTROL2, 0x03},
	76	{SENSOR, 0x21, 0x90},
	77	{SENSOR, PO1030_YTARGET, 0x60},
	78	{SENSOR, 0x59, 0x13},
	79	{SENSOR, PO1030_OUTFORMCTRL1, PO1030_HREF_ENABLE},
	80	{SENSOR, PO1030_EDGE_ENH_OFF, 0x00},
	81	{SENSOR, PO1030_EGA, 0x80},
	82	{SENSOR, 0x78, 0x14},
	83	{SENSOR, 0x6f, 0x01},
	84	{SENSOR, PO1030_GLOBALGAINMAX, 0x14},
	85	{SENSOR, PO1030_Cb_U_GAIN, 0x38},
86	{SENSOR, PO1030_Cr_V_GAIN, 0x38},
87	{SENSOR, PO1030_CONTROL1, PO1030_SHUTTER_MODE \|
88	PO1030_AUTO_SUBSAMPLING \|
89	PO1030_FRAME_EQUAL},
90	{SENSOR, PO1030_GC0, 0x10},
91	{SENSOR, PO1030_GC1, 0x20},
92	{SENSOR, PO1030_GC2, 0x40},
93	{SENSOR, PO1030_GC3, 0x60},
94	{SENSOR, PO1030_GC4, 0x80},
95	{SENSOR, PO1030_GC5, 0xa0},
96	{SENSOR, PO1030_GC6, 0xc0},
97	{SENSOR, PO1030_GC7, 0xff},
98
99	/* Set the width to 751 */
100	{SENSOR, PO1030_FRAMEWIDTH_H, 0x02},
101	{SENSOR, PO1030_FRAMEWIDTH_L, 0xef},
102
103	/* Set the height to 540 */
104	{SENSOR, PO1030_FRAMEHEIGHT_H, 0x02},
105	{SENSOR, PO1030_FRAMEHEIGHT_L, 0x1c},
106
107	/* Set the x window to 1 */
108	{SENSOR, PO1030_WINDOWX_H, 0x00},
109	{SENSOR, PO1030_WINDOWX_L, 0x01},
110
111	/* Set the y window to 1 */
112	{SENSOR, PO1030_WINDOWY_H, 0x00},
113	{SENSOR, PO1030_WINDOWY_L, 0x01},
114
115	/* with a very low lighted environment increase the exposure but
116	* decrease the FPS (Frame Per Second) */
117	{BRIDGE, M5602_XB_SEN_CLK_DIV, 0x00},
118	{BRIDGE, M5602_XB_SEN_CLK_CTRL, 0xb0},
119
120	{BRIDGE, M5602_XB_GPIO_DIR, 0x05},
121	{BRIDGE, M5602_XB_GPIO_DAT, 0x00},
122	{BRIDGE, M5602_XB_GPIO_EN_H, 0x06},
123	{BRIDGE, M5602_XB_GPIO_EN_L, 0x00},
124	};
125
74cadfe1 EA	126	static struct v4l2_pix_format po1030_modes[] = {
	127	{
	128	640,
	129	480,
	130	V4L2_PIX_FMT_SBGGR8,
	131	V4L2_FIELD_NONE,
	132	.sizeimage = 640 * 480,
	133	.bytesperline = 640,
	134	.colorspace = V4L2_COLORSPACE_SRGB,
9536a57e	135	.priv = 2
74cadfe1 EA	136	}
	137	};
	138
c84e412f HG	139	static const struct v4l2_ctrl_ops po1030_ctrl_ops = {
c84e412f HG	140	.s_ctrl = po1030_s_ctrl,
e17cc08c EA	141	};
e17cc08c EA	142
c84e412f HG	143	static const struct v4l2_ctrl_config po1030_greenbal_cfg = {
	144	.ops = &po1030_ctrl_ops,
	145	.id = M5602_V4L2_CID_GREEN_BALANCE,
	146	.name = "Green Balance",
	147	.type = V4L2_CTRL_TYPE_INTEGER,
	148	.min = 0,
	149	.max = 255,
	150	.step = 1,
	151	.def = PO1030_GREEN_GAIN_DEFAULT,
	152	.flags = V4L2_CTRL_FLAG_SLIDER,
	153	};
658efb63	154
c109f816 EA	155	int po1030_probe(struct sd *sd)
c109f816 EA	156	{
a21a0eb5	157	int rc = 0;
3e5cbad0	158	u8 dev_id_h = 0, i;
c93396e1	159	struct gspca_dev gspca_dev = (struct gspca_dev )sd;
c109f816 EA	160
	161	if (force_sensor) {
	162	if (force_sensor == PO1030_SENSOR) {
bdfe91f4	163	pr_info("Forcing a %s sensor\n", po1030.name);
c109f816 EA	164	goto sensor_found;
	165	}
	166	/* If we want to force another sensor, don't try to probe this
	167	* one */
	168	return -ENODEV;
	169	}
	170
37d5efb0	171	gspca_dbg(gspca_dev, D_PROBE, "Probing for a po1030 sensor\n");
c109f816 EA	172
	173	/* Run the pre-init to actually probe the unit */
	174	for (i = 0; i < ARRAY_SIZE(preinit_po1030); i++) {
	175	u8 data = preinit_po1030[i][2];
	176	if (preinit_po1030[i][0] == SENSOR)
a21a0eb5	177	rc \|= m5602_write_sensor(sd,
c109f816 EA	178	preinit_po1030[i][1], &data, 1);
c109f816 EA	179	else
a21a0eb5 AP	180	rc \|= m5602_write_bridge(sd, preinit_po1030[i][1],
a21a0eb5 AP	181	data);
c109f816	182	}
a21a0eb5 AP	183	if (rc < 0)
a21a0eb5 AP	184	return rc;
c109f816	185
fcb98108	186	if (m5602_read_sensor(sd, PO1030_DEVID_H, &dev_id_h, 1))
c109f816 EA	187	return -ENODEV;
c109f816 EA	188
3e5cbad0	189	if (dev_id_h == 0x30) {
bdfe91f4	190	pr_info("Detected a po1030 sensor\n");
c109f816 EA	191	goto sensor_found;
	192	}
	193	return -ENODEV;
	194
	195	sensor_found:
74cadfe1 EA	196	sd->gspca_dev.cam.cam_mode = po1030_modes;
74cadfe1 EA	197	sd->gspca_dev.cam.nmodes = ARRAY_SIZE(po1030_modes);
cb29e691	198
c109f816 EA	199	return 0;
	200	}
	201
c109f816 EA	202	int po1030_init(struct sd *sd)
	203	{
	204	int i, err = 0;
	205
	206	/* Init the sensor */
7b9f2467	207	for (i = 0; i < ARRAY_SIZE(init_po1030) && !err; i++) {
c109f816 EA	208	u8 data[2] = {0x00, 0x00};
	209
	210	switch (init_po1030[i][0]) {
	211	case BRIDGE:
	212	err = m5602_write_bridge(sd,
	213	init_po1030[i][1],
	214	init_po1030[i][2]);
	215	break;
	216
	217	case SENSOR:
	218	data[0] = init_po1030[i][2];
6dc4cff0	219	err = m5602_write_sensor(sd,
c109f816 EA	220	init_po1030[i][1], data, 1);
	221	break;
	222
c109f816	223	default:
bdfe91f4	224	pr_info("Invalid stream command, exiting init\n");
c109f816 EA	225	return -EINVAL;
	226	}
	227	}
cb29e691 EA	228	if (err < 0)
cb29e691 EA	229	return err;
c109f816	230
36e756c5 EA	231	if (dump_sensor)
	232	po1030_dump_registers(sd);
	233
c84e412f HG	234	return 0;
c84e412f HG	235	}
3b9ae658	236
c84e412f HG	237	int po1030_init_controls(struct sd *sd)
	238	{
	239	struct v4l2_ctrl_handler *hdl = &sd->gspca_dev.ctrl_handler;
	240
	241	sd->gspca_dev.vdev.ctrl_handler = hdl;
	242	v4l2_ctrl_handler_init(hdl, 9);
	243
	244	sd->auto_white_bal = v4l2_ctrl_new_std(hdl, &po1030_ctrl_ops,
	245	V4L2_CID_AUTO_WHITE_BALANCE,
	246	0, 1, 1, 0);
	247	sd->green_bal = v4l2_ctrl_new_custom(hdl, &po1030_greenbal_cfg, NULL);
	248	sd->red_bal = v4l2_ctrl_new_std(hdl, &po1030_ctrl_ops,
	249	V4L2_CID_RED_BALANCE, 0, 255, 1,
	250	PO1030_RED_GAIN_DEFAULT);
	251	sd->blue_bal = v4l2_ctrl_new_std(hdl, &po1030_ctrl_ops,
	252	V4L2_CID_BLUE_BALANCE, 0, 255, 1,
	253	PO1030_BLUE_GAIN_DEFAULT);
	254
	255	sd->autoexpo = v4l2_ctrl_new_std_menu(hdl, &po1030_ctrl_ops,
	256	V4L2_CID_EXPOSURE_AUTO, 1, 0, V4L2_EXPOSURE_MANUAL);
	257	sd->expo = v4l2_ctrl_new_std(hdl, &po1030_ctrl_ops, V4L2_CID_EXPOSURE,
	258	0, 0x2ff, 1, PO1030_EXPOSURE_DEFAULT);
	259
	260	sd->gain = v4l2_ctrl_new_std(hdl, &po1030_ctrl_ops, V4L2_CID_GAIN, 0,
	261	0x4f, 1, PO1030_GLOBAL_GAIN_DEFAULT);
	262
	263	sd->hflip = v4l2_ctrl_new_std(hdl, &po1030_ctrl_ops, V4L2_CID_HFLIP,
	264	0, 1, 1, 0);
	265	sd->vflip = v4l2_ctrl_new_std(hdl, &po1030_ctrl_ops, V4L2_CID_VFLIP,
	266	0, 1, 1, 0);
	267
	268	if (hdl->error) {
	269	pr_err("Could not initialize controls\n");
	270	return hdl->error;
	271	}
b933d585	272
c84e412f HG	273	v4l2_ctrl_auto_cluster(4, &sd->auto_white_bal, 0, false);
	274	v4l2_ctrl_auto_cluster(2, &sd->autoexpo, 0, false);
	275	v4l2_ctrl_cluster(2, &sd->hflip);
dd9ce84a	276
c84e412f	277	return 0;
c109f816 EA	278	}
c109f816 EA	279
c996b368 EA	280	int po1030_start(struct sd *sd)
c996b368 EA	281	{
e807f20d	282	struct cam *cam = &sd->gspca_dev.cam;
c996b368	283	int i, err = 0;
e807f20d EA	284	int width = cam->cam_mode[sd->gspca_dev.curr_mode].width;
e807f20d EA	285	int height = cam->cam_mode[sd->gspca_dev.curr_mode].height;
9536a57e	286	int ver_offs = cam->cam_mode[sd->gspca_dev.curr_mode].priv;
e807f20d EA	287	u8 data;
	288
	289	switch (width) {
931a1c8d EA	290	case 320:
	291	data = PO1030_SUBSAMPLING;
	292	err = m5602_write_sensor(sd, PO1030_CONTROL3, &data, 1);
	293	if (err < 0)
	294	return err;
	295
	296	data = ((width + 3) >> 8) & 0xff;
	297	err = m5602_write_sensor(sd, PO1030_WINDOWWIDTH_H, &data, 1);
	298	if (err < 0)
	299	return err;
	300
	301	data = (width + 3) & 0xff;
	302	err = m5602_write_sensor(sd, PO1030_WINDOWWIDTH_L, &data, 1);
	303	if (err < 0)
	304	return err;
	305
	306	data = ((height + 1) >> 8) & 0xff;
	307	err = m5602_write_sensor(sd, PO1030_WINDOWHEIGHT_H, &data, 1);
	308	if (err < 0)
	309	return err;
	310
	311	data = (height + 1) & 0xff;
	312	err = m5602_write_sensor(sd, PO1030_WINDOWHEIGHT_L, &data, 1);
	313
	314	height += 6;
	315	width -= 1;
	316	break;
	317
e807f20d	318	case 640:
894e4087 EA	319	data = 0;
	320	err = m5602_write_sensor(sd, PO1030_CONTROL3, &data, 1);
	321	if (err < 0)
	322	return err;
	323
e807f20d EA	324	data = ((width + 7) >> 8) & 0xff;
	325	err = m5602_write_sensor(sd, PO1030_WINDOWWIDTH_H, &data, 1);
	326	if (err < 0)
	327	return err;
	328
	329	data = (width + 7) & 0xff;
	330	err = m5602_write_sensor(sd, PO1030_WINDOWWIDTH_L, &data, 1);
	331	if (err < 0)
	332	return err;
	333
	334	data = ((height + 3) >> 8) & 0xff;
	335	err = m5602_write_sensor(sd, PO1030_WINDOWHEIGHT_H, &data, 1);
	336	if (err < 0)
	337	return err;
	338
	339	data = (height + 3) & 0xff;
	340	err = m5602_write_sensor(sd, PO1030_WINDOWHEIGHT_L, &data, 1);
9536a57e EA	341
	342	height += 12;
	343	width -= 2;
e807f20d EA	344	break;
e807f20d EA	345	}
98192670 EA	346	err = m5602_write_bridge(sd, M5602_XB_SENSOR_TYPE, 0x0c);
	347	if (err < 0)
	348	return err;
e807f20d	349
9536a57e EA	350	err = m5602_write_bridge(sd, M5602_XB_LINE_OF_FRAME_H, 0x81);
	351	if (err < 0)
	352	return err;
	353
	354	err = m5602_write_bridge(sd, M5602_XB_PIX_OF_LINE_H, 0x82);
	355	if (err < 0)
	356	return err;
	357
98192670 EA	358	err = m5602_write_bridge(sd, M5602_XB_SIG_INI, 0x01);
	359	if (err < 0)
	360	return err;
	361
9536a57e EA	362	err = m5602_write_bridge(sd, M5602_XB_VSYNC_PARA,
	363	((ver_offs >> 8) & 0xff));
	364	if (err < 0)
	365	return err;
	366
	367	err = m5602_write_bridge(sd, M5602_XB_VSYNC_PARA, (ver_offs & 0xff));
	368	if (err < 0)
	369	return err;
	370
98192670 EA	371	for (i = 0; i < 2 && !err; i++)
98192670 EA	372	err = m5602_write_bridge(sd, M5602_XB_VSYNC_PARA, 0);
9536a57e EA	373	if (err < 0)
	374	return err;
	375
	376	err = m5602_write_bridge(sd, M5602_XB_VSYNC_PARA, (height >> 8) & 0xff);
	377	if (err < 0)
	378	return err;
	379
	380	err = m5602_write_bridge(sd, M5602_XB_VSYNC_PARA, (height & 0xff));
	381	if (err < 0)
	382	return err;
	383
	384	for (i = 0; i < 2 && !err; i++)
	385	err = m5602_write_bridge(sd, M5602_XB_VSYNC_PARA, 0);
	386
98192670 EA	387	for (i = 0; i < 2 && !err; i++)
	388	err = m5602_write_bridge(sd, M5602_XB_SIG_INI, 0);
	389
9536a57e EA	390	for (i = 0; i < 2 && !err; i++)
	391	err = m5602_write_bridge(sd, M5602_XB_HSYNC_PARA, 0);
	392	if (err < 0)
	393	return err;
	394
	395	err = m5602_write_bridge(sd, M5602_XB_HSYNC_PARA, (width >> 8) & 0xff);
	396	if (err < 0)
	397	return err;
	398
	399	err = m5602_write_bridge(sd, M5602_XB_HSYNC_PARA, (width & 0xff));
98192670 EA	400	if (err < 0)
	401	return err;
	402
	403	err = m5602_write_bridge(sd, M5602_XB_SIG_INI, 0);
c996b368 EA	404	return err;
	405	}
	406
cf811d50	407	static int po1030_set_exposure(struct gspca_dev *gspca_dev, __s32 val)
c109f816 EA	408	{
	409	struct sd sd = (struct sd ) gspca_dev;
	410	u8 i2c_data;
	411	int err;
	412
37d5efb0	413	gspca_dbg(gspca_dev, D_CONF, "Set exposure to %d\n", val & 0xffff);
c109f816 EA	414
c109f816 EA	415	i2c_data = ((val & 0xff00) >> 8);
37d5efb0 JP	416	gspca_dbg(gspca_dev, D_CONF, "Set exposure to high byte to 0x%x\n",
37d5efb0 JP	417	i2c_data);
c109f816	418
bb9460eb	419	err = m5602_write_sensor(sd, PO1030_INTEGLINES_H,
c109f816 EA	420	&i2c_data, 1);
c109f816 EA	421	if (err < 0)
051781b3	422	return err;
c109f816 EA	423
c109f816 EA	424	i2c_data = (val & 0xff);
37d5efb0 JP	425	gspca_dbg(gspca_dev, D_CONF, "Set exposure to low byte to 0x%x\n",
37d5efb0 JP	426	i2c_data);
bb9460eb	427	err = m5602_write_sensor(sd, PO1030_INTEGLINES_M,
c109f816 EA	428	&i2c_data, 1);
c109f816 EA	429
7b9f2467	430	return err;
c109f816 EA	431	}
c109f816 EA	432
cf811d50	433	static int po1030_set_gain(struct gspca_dev *gspca_dev, __s32 val)
e2c97491 EA	434	{
	435	struct sd sd = (struct sd ) gspca_dev;
	436	u8 i2c_data;
	437	int err;
	438
05d7d9ce	439	i2c_data = val & 0xff;
37d5efb0	440	gspca_dbg(gspca_dev, D_CONF, "Set global gain to %d\n", i2c_data);
bb9460eb	441	err = m5602_write_sensor(sd, PO1030_GLOBALGAIN,
e2c97491	442	&i2c_data, 1);
05d7d9ce EA	443	return err;
05d7d9ce EA	444	}
e2c97491	445
c84e412f	446	static int po1030_set_hvflip(struct gspca_dev *gspca_dev)
e2c97491 EA	447	{
e2c97491 EA	448	struct sd sd = (struct sd ) gspca_dev;
e2c97491 EA	449	u8 i2c_data;
	450	int err;
	451
37d5efb0 JP	452	gspca_dbg(gspca_dev, D_CONF, "Set hvflip %d %d\n",
37d5efb0 JP	453	sd->hflip->val, sd->vflip->val);
bb9460eb	454	err = m5602_read_sensor(sd, PO1030_CONTROL2, &i2c_data, 1);
1d07b6f1	455	if (err < 0)
051781b3	456	return err;
e2c97491	457
c84e412f HG	458	i2c_data = (0x3f & i2c_data) \| (sd->hflip->val << 7) \|
c84e412f HG	459	(sd->vflip->val << 6);
e2c97491	460
bb9460eb	461	err = m5602_write_sensor(sd, PO1030_CONTROL2,
1d07b6f1	462	&i2c_data, 1);
e2c97491	463
7b9f2467	464	return err;
e2c97491 EA	465	}
e2c97491 EA	466
cf811d50	467	static int po1030_set_red_balance(struct gspca_dev *gspca_dev, __s32 val)
c109f816 EA	468	{
	469	struct sd sd = (struct sd ) gspca_dev;
	470	u8 i2c_data;
	471	int err;
	472
	473	i2c_data = val & 0xff;
37d5efb0	474	gspca_dbg(gspca_dev, D_CONF, "Set red gain to %d\n", i2c_data);
bb9460eb	475	err = m5602_write_sensor(sd, PO1030_RED_GAIN,
c109f816	476	&i2c_data, 1);
7b9f2467	477	return err;
c109f816 EA	478	}
c109f816 EA	479
cf811d50	480	static int po1030_set_blue_balance(struct gspca_dev *gspca_dev, __s32 val)
c109f816 EA	481	{
	482	struct sd sd = (struct sd ) gspca_dev;
	483	u8 i2c_data;
	484	int err;
05d7d9ce	485
c109f816	486	i2c_data = val & 0xff;
37d5efb0	487	gspca_dbg(gspca_dev, D_CONF, "Set blue gain to %d\n", i2c_data);
bb9460eb	488	err = m5602_write_sensor(sd, PO1030_BLUE_GAIN,
c109f816 EA	489	&i2c_data, 1);
c109f816 EA	490
7b9f2467	491	return err;
c109f816 EA	492	}
c109f816 EA	493
b933d585 EA	494	static int po1030_set_green_balance(struct gspca_dev *gspca_dev, __s32 val)
	495	{
	496	struct sd sd = (struct sd ) gspca_dev;
b933d585 EA	497	u8 i2c_data;
	498	int err;
	499
b933d585	500	i2c_data = val & 0xff;
37d5efb0	501	gspca_dbg(gspca_dev, D_CONF, "Set green gain to %d\n", i2c_data);
b933d585 EA	502
	503	err = m5602_write_sensor(sd, PO1030_GREEN_1_GAIN,
	504	&i2c_data, 1);
	505	if (err < 0)
	506	return err;
	507
	508	return m5602_write_sensor(sd, PO1030_GREEN_2_GAIN,
	509	&i2c_data, 1);
	510	}
	511
cf811d50 EA	512	static int po1030_set_auto_white_balance(struct gspca_dev *gspca_dev,
cf811d50 EA	513	__s32 val)
3b9ae658 EA	514	{
3b9ae658 EA	515	struct sd sd = (struct sd ) gspca_dev;
3b9ae658 EA	516	u8 i2c_data;
	517	int err;
	518
3b9ae658 EA	519	err = m5602_read_sensor(sd, PO1030_AUTOCTRL1, &i2c_data, 1);
	520	if (err < 0)
	521	return err;
	522
37d5efb0	523	gspca_dbg(gspca_dev, D_CONF, "Set auto white balance to %d\n", val);
3b9ae658 EA	524	i2c_data = (i2c_data & 0xfe) \| (val & 0x01);
	525	err = m5602_write_sensor(sd, PO1030_AUTOCTRL1, &i2c_data, 1);
	526	return err;
	527	}
	528
dd9ce84a EA	529	static int po1030_set_auto_exposure(struct gspca_dev *gspca_dev,
	530	__s32 val)
	531	{
	532	struct sd sd = (struct sd ) gspca_dev;
dd9ce84a EA	533	u8 i2c_data;
	534	int err;
	535
dd9ce84a EA	536	err = m5602_read_sensor(sd, PO1030_AUTOCTRL1, &i2c_data, 1);
	537	if (err < 0)
	538	return err;
	539
37d5efb0	540	gspca_dbg(gspca_dev, D_CONF, "Set auto exposure to %d\n", val);
c84e412f	541	val = (val == V4L2_EXPOSURE_AUTO);
dd9ce84a EA	542	i2c_data = (i2c_data & 0xfd) \| ((val & 0x01) << 1);
	543	return m5602_write_sensor(sd, PO1030_AUTOCTRL1, &i2c_data, 1);
	544	}
	545
05d7d9ce EA	546	void po1030_disconnect(struct sd *sd)
	547	{
	548	sd->sensor = NULL;
c84e412f HG	549	}
	550
	551	static int po1030_s_ctrl(struct v4l2_ctrl *ctrl)
	552	{
	553	struct gspca_dev *gspca_dev =
	554	container_of(ctrl->handler, struct gspca_dev, ctrl_handler);
	555	struct sd sd = (struct sd ) gspca_dev;
	556	int err;
	557
	558	if (!gspca_dev->streaming)
	559	return 0;
	560
	561	switch (ctrl->id) {
	562	case V4L2_CID_AUTO_WHITE_BALANCE:
	563	err = po1030_set_auto_white_balance(gspca_dev, ctrl->val);
	564	if (err \|\| ctrl->val)
	565	return err;
	566	err = po1030_set_green_balance(gspca_dev, sd->green_bal->val);
	567	if (err)
	568	return err;
	569	err = po1030_set_red_balance(gspca_dev, sd->red_bal->val);
	570	if (err)
	571	return err;
	572	err = po1030_set_blue_balance(gspca_dev, sd->blue_bal->val);
	573	break;
	574	case V4L2_CID_EXPOSURE_AUTO:
	575	err = po1030_set_auto_exposure(gspca_dev, ctrl->val);
	576	if (err \|\| ctrl->val == V4L2_EXPOSURE_AUTO)
	577	return err;
	578	err = po1030_set_exposure(gspca_dev, sd->expo->val);
	579	break;
	580	case V4L2_CID_GAIN:
	581	err = po1030_set_gain(gspca_dev, ctrl->val);
	582	break;
	583	case V4L2_CID_HFLIP:
	584	err = po1030_set_hvflip(gspca_dev);
	585	break;
	586	default:
	587	return -EINVAL;
	588	}
	589
	590	return err;
05d7d9ce EA	591	}
05d7d9ce EA	592
658efb63	593	static void po1030_dump_registers(struct sd *sd)
c109f816 EA	594	{
	595	int address;
	596	u8 value = 0;
	597
bdfe91f4	598	pr_info("Dumping the po1030 sensor core registers\n");
c109f816	599	for (address = 0; address < 0x7f; address++) {
c061c97e	600	m5602_read_sensor(sd, address, &value, 1);
bdfe91f4	601	pr_info("register 0x%x contains 0x%x\n", address, value);
c109f816 EA	602	}
c109f816 EA	603
bdfe91f4	604	pr_info("po1030 register state dump complete\n");
c109f816	605
bdfe91f4	606	pr_info("Probing for which registers that are read/write\n");
c109f816 EA	607	for (address = 0; address < 0xff; address++) {
	608	u8 old_value, ctrl_value;
	609	u8 test_value[2] = {0xff, 0xff};
	610
c061c97e	611	m5602_read_sensor(sd, address, &old_value, 1);
6dc4cff0	612	m5602_write_sensor(sd, address, test_value, 1);
c061c97e	613	m5602_read_sensor(sd, address, &ctrl_value, 1);
c109f816 EA	614
c109f816 EA	615	if (ctrl_value == test_value[0])
bdfe91f4	616	pr_info("register 0x%x is writeable\n", address);
c109f816	617	else
bdfe91f4	618	pr_info("register 0x%x is read only\n", address);
c109f816 EA	619
c109f816 EA	620	/* Restore original value */
6dc4cff0	621	m5602_write_sensor(sd, address, &old_value, 1);
c109f816 EA	622	}
c109f816 EA	623	}