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path: root/drivers/media/usb/gspca/m5602/m5602_po1030.c
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Diffstat (limited to 'drivers/media/usb/gspca/m5602/m5602_po1030.c')
-rw-r--r--drivers/media/usb/gspca/m5602/m5602_po1030.c763
1 files changed, 763 insertions, 0 deletions
diff --git a/drivers/media/usb/gspca/m5602/m5602_po1030.c b/drivers/media/usb/gspca/m5602/m5602_po1030.c
new file mode 100644
index 000000000000..b8771698cbcb
--- /dev/null
+++ b/drivers/media/usb/gspca/m5602/m5602_po1030.c
@@ -0,0 +1,763 @@
+/*
+ * 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
+ *
+ * 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, version 2.
+ *
+ */
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#include "m5602_po1030.h"
+
+static int po1030_get_exposure(struct gspca_dev *gspca_dev, __s32 *val);
+static int po1030_set_exposure(struct gspca_dev *gspca_dev, __s32 val);
+static int po1030_get_gain(struct gspca_dev *gspca_dev, __s32 *val);
+static int po1030_set_gain(struct gspca_dev *gspca_dev, __s32 val);
+static int po1030_get_red_balance(struct gspca_dev *gspca_dev, __s32 *val);
+static int po1030_set_red_balance(struct gspca_dev *gspca_dev, __s32 val);
+static int po1030_get_blue_balance(struct gspca_dev *gspca_dev, __s32 *val);
+static int po1030_set_blue_balance(struct gspca_dev *gspca_dev, __s32 val);
+static int po1030_get_green_balance(struct gspca_dev *gspca_dev, __s32 *val);
+static int po1030_set_green_balance(struct gspca_dev *gspca_dev, __s32 val);
+static int po1030_get_hflip(struct gspca_dev *gspca_dev, __s32 *val);
+static int po1030_set_hflip(struct gspca_dev *gspca_dev, __s32 val);
+static int po1030_get_vflip(struct gspca_dev *gspca_dev, __s32 *val);
+static int po1030_set_vflip(struct gspca_dev *gspca_dev, __s32 val);
+static int po1030_set_auto_white_balance(struct gspca_dev *gspca_dev,
+ __s32 val);
+static int po1030_get_auto_white_balance(struct gspca_dev *gspca_dev,
+ __s32 *val);
+static int po1030_set_auto_exposure(struct gspca_dev *gspca_dev,
+ __s32 val);
+static int po1030_get_auto_exposure(struct gspca_dev *gspca_dev,
+ __s32 *val);
+
+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 ctrl po1030_ctrls[] = {
+#define GAIN_IDX 0
+ {
+ {
+ .id = V4L2_CID_GAIN,
+ .type = V4L2_CTRL_TYPE_INTEGER,
+ .name = "gain",
+ .minimum = 0x00,
+ .maximum = 0x4f,
+ .step = 0x1,
+ .default_value = PO1030_GLOBAL_GAIN_DEFAULT,
+ .flags = V4L2_CTRL_FLAG_SLIDER
+ },
+ .set = po1030_set_gain,
+ .get = po1030_get_gain
+ },
+#define EXPOSURE_IDX 1
+ {
+ {
+ .id = V4L2_CID_EXPOSURE,
+ .type = V4L2_CTRL_TYPE_INTEGER,
+ .name = "exposure",
+ .minimum = 0x00,
+ .maximum = 0x02ff,
+ .step = 0x1,
+ .default_value = PO1030_EXPOSURE_DEFAULT,
+ .flags = V4L2_CTRL_FLAG_SLIDER
+ },
+ .set = po1030_set_exposure,
+ .get = po1030_get_exposure
+ },
+#define RED_BALANCE_IDX 2
+ {
+ {
+ .id = V4L2_CID_RED_BALANCE,
+ .type = V4L2_CTRL_TYPE_INTEGER,
+ .name = "red balance",
+ .minimum = 0x00,
+ .maximum = 0xff,
+ .step = 0x1,
+ .default_value = PO1030_RED_GAIN_DEFAULT,
+ .flags = V4L2_CTRL_FLAG_SLIDER
+ },
+ .set = po1030_set_red_balance,
+ .get = po1030_get_red_balance
+ },
+#define BLUE_BALANCE_IDX 3
+ {
+ {
+ .id = V4L2_CID_BLUE_BALANCE,
+ .type = V4L2_CTRL_TYPE_INTEGER,
+ .name = "blue balance",
+ .minimum = 0x00,
+ .maximum = 0xff,
+ .step = 0x1,
+ .default_value = PO1030_BLUE_GAIN_DEFAULT,
+ .flags = V4L2_CTRL_FLAG_SLIDER
+ },
+ .set = po1030_set_blue_balance,
+ .get = po1030_get_blue_balance
+ },
+#define HFLIP_IDX 4
+ {
+ {
+ .id = V4L2_CID_HFLIP,
+ .type = V4L2_CTRL_TYPE_BOOLEAN,
+ .name = "horizontal flip",
+ .minimum = 0,
+ .maximum = 1,
+ .step = 1,
+ .default_value = 0,
+ },
+ .set = po1030_set_hflip,
+ .get = po1030_get_hflip
+ },
+#define VFLIP_IDX 5
+ {
+ {
+ .id = V4L2_CID_VFLIP,
+ .type = V4L2_CTRL_TYPE_BOOLEAN,
+ .name = "vertical flip",
+ .minimum = 0,
+ .maximum = 1,
+ .step = 1,
+ .default_value = 0,
+ },
+ .set = po1030_set_vflip,
+ .get = po1030_get_vflip
+ },
+#define AUTO_WHITE_BALANCE_IDX 6
+ {
+ {
+ .id = V4L2_CID_AUTO_WHITE_BALANCE,
+ .type = V4L2_CTRL_TYPE_BOOLEAN,
+ .name = "auto white balance",
+ .minimum = 0,
+ .maximum = 1,
+ .step = 1,
+ .default_value = 0,
+ },
+ .set = po1030_set_auto_white_balance,
+ .get = po1030_get_auto_white_balance
+ },
+#define AUTO_EXPOSURE_IDX 7
+ {
+ {
+ .id = V4L2_CID_EXPOSURE_AUTO,
+ .type = V4L2_CTRL_TYPE_BOOLEAN,
+ .name = "auto exposure",
+ .minimum = 0,
+ .maximum = 1,
+ .step = 1,
+ .default_value = 0,
+ },
+ .set = po1030_set_auto_exposure,
+ .get = po1030_get_auto_exposure
+ },
+#define GREEN_BALANCE_IDX 8
+ {
+ {
+ .id = M5602_V4L2_CID_GREEN_BALANCE,
+ .type = V4L2_CTRL_TYPE_INTEGER,
+ .name = "green balance",
+ .minimum = 0x00,
+ .maximum = 0xff,
+ .step = 0x1,
+ .default_value = PO1030_GREEN_GAIN_DEFAULT,
+ .flags = V4L2_CTRL_FLAG_SLIDER
+ },
+ .set = po1030_set_green_balance,
+ .get = po1030_get_green_balance
+ },
+};
+
+static void po1030_dump_registers(struct sd *sd);
+
+int po1030_probe(struct sd *sd)
+{
+ u8 dev_id_h = 0, i;
+ s32 *sensor_settings;
+
+ 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;
+ }
+
+ PDEBUG(D_PROBE, "Probing for a po1030 sensor");
+
+ /* 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)
+ m5602_write_sensor(sd,
+ preinit_po1030[i][1], &data, 1);
+ else
+ m5602_write_bridge(sd, preinit_po1030[i][1], data);
+ }
+
+ 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:
+ sensor_settings = kmalloc(
+ ARRAY_SIZE(po1030_ctrls) * sizeof(s32), GFP_KERNEL);
+ if (!sensor_settings)
+ return -ENOMEM;
+
+ sd->gspca_dev.cam.cam_mode = po1030_modes;
+ sd->gspca_dev.cam.nmodes = ARRAY_SIZE(po1030_modes);
+ sd->desc->ctrls = po1030_ctrls;
+ sd->desc->nctrls = ARRAY_SIZE(po1030_ctrls);
+
+ for (i = 0; i < ARRAY_SIZE(po1030_ctrls); i++)
+ sensor_settings[i] = po1030_ctrls[i].qctrl.default_value;
+ sd->sensor_priv = sensor_settings;
+
+ return 0;
+}
+
+int po1030_init(struct sd *sd)
+{
+ s32 *sensor_settings = sd->sensor_priv;
+ 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);
+
+ err = po1030_set_exposure(&sd->gspca_dev,
+ sensor_settings[EXPOSURE_IDX]);
+ if (err < 0)
+ return err;
+
+ err = po1030_set_gain(&sd->gspca_dev, sensor_settings[GAIN_IDX]);
+ if (err < 0)
+ return err;
+
+ err = po1030_set_hflip(&sd->gspca_dev, sensor_settings[HFLIP_IDX]);
+ if (err < 0)
+ return err;
+
+ err = po1030_set_vflip(&sd->gspca_dev, sensor_settings[VFLIP_IDX]);
+ if (err < 0)
+ return err;
+
+ err = po1030_set_red_balance(&sd->gspca_dev,
+ sensor_settings[RED_BALANCE_IDX]);
+ if (err < 0)
+ return err;
+
+ err = po1030_set_blue_balance(&sd->gspca_dev,
+ sensor_settings[BLUE_BALANCE_IDX]);
+ if (err < 0)
+ return err;
+
+ err = po1030_set_green_balance(&sd->gspca_dev,
+ sensor_settings[GREEN_BALANCE_IDX]);
+ if (err < 0)
+ return err;
+
+ err = po1030_set_auto_white_balance(&sd->gspca_dev,
+ sensor_settings[AUTO_WHITE_BALANCE_IDX]);
+ if (err < 0)
+ return err;
+
+ err = po1030_set_auto_exposure(&sd->gspca_dev,
+ sensor_settings[AUTO_EXPOSURE_IDX]);
+ return err;
+}
+
+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_get_exposure(struct gspca_dev *gspca_dev, __s32 *val)
+{
+ struct sd *sd = (struct sd *) gspca_dev;
+ s32 *sensor_settings = sd->sensor_priv;
+
+ *val = sensor_settings[EXPOSURE_IDX];
+ PDEBUG(D_V4L2, "Exposure read as %d", *val);
+ return 0;
+}
+
+static int po1030_set_exposure(struct gspca_dev *gspca_dev, __s32 val)
+{
+ struct sd *sd = (struct sd *) gspca_dev;
+ s32 *sensor_settings = sd->sensor_priv;
+ u8 i2c_data;
+ int err;
+
+ sensor_settings[EXPOSURE_IDX] = val;
+ PDEBUG(D_V4L2, "Set exposure to %d", val & 0xffff);
+
+ i2c_data = ((val & 0xff00) >> 8);
+ PDEBUG(D_V4L2, "Set exposure to high byte to 0x%x",
+ i2c_data);
+
+ err = m5602_write_sensor(sd, PO1030_INTEGLINES_H,
+ &i2c_data, 1);
+ if (err < 0)
+ return err;
+
+ i2c_data = (val & 0xff);
+ PDEBUG(D_V4L2, "Set exposure to low byte to 0x%x",
+ i2c_data);
+ err = m5602_write_sensor(sd, PO1030_INTEGLINES_M,
+ &i2c_data, 1);
+
+ return err;
+}
+
+static int po1030_get_gain(struct gspca_dev *gspca_dev, __s32 *val)
+{
+ struct sd *sd = (struct sd *) gspca_dev;
+ s32 *sensor_settings = sd->sensor_priv;
+
+ *val = sensor_settings[GAIN_IDX];
+ PDEBUG(D_V4L2, "Read global gain %d", *val);
+ return 0;
+}
+
+static int po1030_set_gain(struct gspca_dev *gspca_dev, __s32 val)
+{
+ struct sd *sd = (struct sd *) gspca_dev;
+ s32 *sensor_settings = sd->sensor_priv;
+ u8 i2c_data;
+ int err;
+
+ sensor_settings[GAIN_IDX] = val;
+
+ i2c_data = val & 0xff;
+ PDEBUG(D_V4L2, "Set global gain to %d", i2c_data);
+ err = m5602_write_sensor(sd, PO1030_GLOBALGAIN,
+ &i2c_data, 1);
+ return err;
+}
+
+static int po1030_get_hflip(struct gspca_dev *gspca_dev, __s32 *val)
+{
+ struct sd *sd = (struct sd *) gspca_dev;
+ s32 *sensor_settings = sd->sensor_priv;
+
+ *val = sensor_settings[HFLIP_IDX];
+ PDEBUG(D_V4L2, "Read hflip %d", *val);
+
+ return 0;
+}
+
+static int po1030_set_hflip(struct gspca_dev *gspca_dev, __s32 val)
+{
+ struct sd *sd = (struct sd *) gspca_dev;
+ s32 *sensor_settings = sd->sensor_priv;
+ u8 i2c_data;
+ int err;
+
+ sensor_settings[HFLIP_IDX] = val;
+
+ PDEBUG(D_V4L2, "Set hflip %d", val);
+ err = m5602_read_sensor(sd, PO1030_CONTROL2, &i2c_data, 1);
+ if (err < 0)
+ return err;
+
+ i2c_data = (0x7f & i2c_data) | ((val & 0x01) << 7);
+
+ err = m5602_write_sensor(sd, PO1030_CONTROL2,
+ &i2c_data, 1);
+
+ return err;
+}
+
+static int po1030_get_vflip(struct gspca_dev *gspca_dev, __s32 *val)
+{
+ struct sd *sd = (struct sd *) gspca_dev;
+ s32 *sensor_settings = sd->sensor_priv;
+
+ *val = sensor_settings[VFLIP_IDX];
+ PDEBUG(D_V4L2, "Read vflip %d", *val);
+
+ return 0;
+}
+
+static int po1030_set_vflip(struct gspca_dev *gspca_dev, __s32 val)
+{
+ struct sd *sd = (struct sd *) gspca_dev;
+ s32 *sensor_settings = sd->sensor_priv;
+ u8 i2c_data;
+ int err;
+
+ sensor_settings[VFLIP_IDX] = val;
+
+ PDEBUG(D_V4L2, "Set vflip %d", val);
+ err = m5602_read_sensor(sd, PO1030_CONTROL2, &i2c_data, 1);
+ if (err < 0)
+ return err;
+
+ i2c_data = (i2c_data & 0xbf) | ((val & 0x01) << 6);
+
+ err = m5602_write_sensor(sd, PO1030_CONTROL2,
+ &i2c_data, 1);
+
+ return err;
+}
+
+static int po1030_get_red_balance(struct gspca_dev *gspca_dev, __s32 *val)
+{
+ struct sd *sd = (struct sd *) gspca_dev;
+ s32 *sensor_settings = sd->sensor_priv;
+
+ *val = sensor_settings[RED_BALANCE_IDX];
+ PDEBUG(D_V4L2, "Read red gain %d", *val);
+ return 0;
+}
+
+static int po1030_set_red_balance(struct gspca_dev *gspca_dev, __s32 val)
+{
+ struct sd *sd = (struct sd *) gspca_dev;
+ s32 *sensor_settings = sd->sensor_priv;
+ u8 i2c_data;
+ int err;
+
+ sensor_settings[RED_BALANCE_IDX] = val;
+
+ i2c_data = val & 0xff;
+ PDEBUG(D_V4L2, "Set red gain to %d", i2c_data);
+ err = m5602_write_sensor(sd, PO1030_RED_GAIN,
+ &i2c_data, 1);
+ return err;
+}
+
+static int po1030_get_blue_balance(struct gspca_dev *gspca_dev, __s32 *val)
+{
+ struct sd *sd = (struct sd *) gspca_dev;
+ s32 *sensor_settings = sd->sensor_priv;
+
+ *val = sensor_settings[BLUE_BALANCE_IDX];
+ PDEBUG(D_V4L2, "Read blue gain %d", *val);
+
+ return 0;
+}
+
+static int po1030_set_blue_balance(struct gspca_dev *gspca_dev, __s32 val)
+{
+ struct sd *sd = (struct sd *) gspca_dev;
+ s32 *sensor_settings = sd->sensor_priv;
+ u8 i2c_data;
+ int err;
+
+ sensor_settings[BLUE_BALANCE_IDX] = val;
+
+ i2c_data = val & 0xff;
+ PDEBUG(D_V4L2, "Set blue gain to %d", i2c_data);
+ err = m5602_write_sensor(sd, PO1030_BLUE_GAIN,
+ &i2c_data, 1);
+
+ return err;
+}
+
+static int po1030_get_green_balance(struct gspca_dev *gspca_dev, __s32 *val)
+{
+ struct sd *sd = (struct sd *) gspca_dev;
+ s32 *sensor_settings = sd->sensor_priv;
+
+ *val = sensor_settings[GREEN_BALANCE_IDX];
+ PDEBUG(D_V4L2, "Read green gain %d", *val);
+
+ return 0;
+}
+
+static int po1030_set_green_balance(struct gspca_dev *gspca_dev, __s32 val)
+{
+ struct sd *sd = (struct sd *) gspca_dev;
+ s32 *sensor_settings = sd->sensor_priv;
+ u8 i2c_data;
+ int err;
+
+ sensor_settings[GREEN_BALANCE_IDX] = val;
+ i2c_data = val & 0xff;
+ PDEBUG(D_V4L2, "Set green gain to %d", 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_get_auto_white_balance(struct gspca_dev *gspca_dev,
+ __s32 *val)
+{
+ struct sd *sd = (struct sd *) gspca_dev;
+ s32 *sensor_settings = sd->sensor_priv;
+
+ *val = sensor_settings[AUTO_WHITE_BALANCE_IDX];
+ PDEBUG(D_V4L2, "Auto white balancing is %d", *val);
+
+ return 0;
+}
+
+static int po1030_set_auto_white_balance(struct gspca_dev *gspca_dev,
+ __s32 val)
+{
+ struct sd *sd = (struct sd *) gspca_dev;
+ s32 *sensor_settings = sd->sensor_priv;
+ u8 i2c_data;
+ int err;
+
+ sensor_settings[AUTO_WHITE_BALANCE_IDX] = val;
+
+ err = m5602_read_sensor(sd, PO1030_AUTOCTRL1, &i2c_data, 1);
+ if (err < 0)
+ return err;
+
+ PDEBUG(D_V4L2, "Set auto white balance to %d", val);
+ i2c_data = (i2c_data & 0xfe) | (val & 0x01);
+ err = m5602_write_sensor(sd, PO1030_AUTOCTRL1, &i2c_data, 1);
+ return err;
+}
+
+static int po1030_get_auto_exposure(struct gspca_dev *gspca_dev,
+ __s32 *val)
+{
+ struct sd *sd = (struct sd *) gspca_dev;
+ s32 *sensor_settings = sd->sensor_priv;
+
+ *val = sensor_settings[AUTO_EXPOSURE_IDX];
+ PDEBUG(D_V4L2, "Auto exposure is %d", *val);
+ return 0;
+}
+
+static int po1030_set_auto_exposure(struct gspca_dev *gspca_dev,
+ __s32 val)
+{
+ struct sd *sd = (struct sd *) gspca_dev;
+ s32 *sensor_settings = sd->sensor_priv;
+ u8 i2c_data;
+ int err;
+
+ sensor_settings[AUTO_EXPOSURE_IDX] = val;
+ err = m5602_read_sensor(sd, PO1030_AUTOCTRL1, &i2c_data, 1);
+ if (err < 0)
+ return err;
+
+ PDEBUG(D_V4L2, "Set auto exposure to %d", val);
+ 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;
+ kfree(sd->sensor_priv);
+}
+
+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);
+ }
+}