#include <linux/log2.h>
#include <linux/module.h>
+#include <media/mt9v022.h>
#include <media/soc_camera.h>
#include <media/soc_mediabus.h>
#include <media/v4l2-subdev.h>
#define MT9V022_PIXEL_OPERATION_MODE 0x0f
#define MT9V022_LED_OUT_CONTROL 0x1b
#define MT9V022_ADC_MODE_CONTROL 0x1c
+#define MT9V022_REG32 0x20
#define MT9V022_ANALOG_GAIN 0x35
#define MT9V022_BLACK_LEVEL_CALIB_CTRL 0x47
#define MT9V022_PIXCLK_FV_LV 0x74
#define MT9V022_COLUMN_SKIP 1
#define MT9V022_ROW_SKIP 4
-#define is_mt9v024(id) (id == 0x1324)
+#define MT9V022_HORIZONTAL_BLANKING_MIN 43
+#define MT9V022_HORIZONTAL_BLANKING_MAX 1023
+#define MT9V022_HORIZONTAL_BLANKING_DEF 94
+#define MT9V022_VERTICAL_BLANKING_MIN 2
+#define MT9V022_VERTICAL_BLANKING_MAX 3000
+#define MT9V022_VERTICAL_BLANKING_DEF 45
+
+#define is_mt9v022_rev3(id) (id == 0x1313)
+#define is_mt9v024(id) (id == 0x1324)
/* MT9V022 has only one fixed colorspace per pixelcode */
struct mt9v022_datafmt {
struct v4l2_ctrl *autogain;
struct v4l2_ctrl *gain;
};
+ struct v4l2_ctrl *hblank;
+ struct v4l2_ctrl *vblank;
struct v4l2_rect rect; /* Sensor window */
const struct mt9v022_datafmt *fmt;
const struct mt9v022_datafmt *fmts;
int num_fmts;
int model; /* V4L2_IDENT_MT9V022* codes from v4l2-chip-ident.h */
u16 chip_control;
+ u16 chip_version;
unsigned short y_skip_top; /* Lines to skip at the top */
};
struct i2c_client *client = v4l2_get_subdevdata(sd);
struct mt9v022 *mt9v022 = to_mt9v022(client);
- if (enable)
+ if (enable) {
/* Switch to master "normal" mode */
mt9v022->chip_control &= ~0x10;
- else
+ if (is_mt9v022_rev3(mt9v022->chip_version) ||
+ is_mt9v024(mt9v022->chip_version)) {
+ /*
+ * Unset snapshot mode specific settings: clear bit 9
+ * and bit 2 in reg. 0x20 when in normal mode.
+ */
+ if (reg_clear(client, MT9V022_REG32, 0x204))
+ return -EIO;
+ }
+ } else {
/* Switch to snapshot mode */
mt9v022->chip_control |= 0x10;
+ if (is_mt9v022_rev3(mt9v022->chip_version) ||
+ is_mt9v024(mt9v022->chip_version)) {
+ /*
+ * Required settings for snapshot mode: set bit 9
+ * (RST enable) and bit 2 (CR enable) in reg. 0x20
+ * See TechNote TN0960 or TN-09-225.
+ */
+ if (reg_set(client, MT9V022_REG32, 0x204))
+ return -EIO;
+ }
+ }
if (reg_write(client, MT9V022_CHIP_CONTROL, mt9v022->chip_control) < 0)
return -EIO;
* Default 94, Phytec driver says:
* "width + horizontal blank >= 660"
*/
- ret = reg_write(client, MT9V022_HORIZONTAL_BLANKING,
- rect.width > 660 - 43 ? 43 :
- 660 - rect.width);
+ ret = v4l2_ctrl_s_ctrl(mt9v022->hblank,
+ rect.width > 660 - 43 ? 43 : 660 - rect.width);
if (!ret)
- ret = reg_write(client, MT9V022_VERTICAL_BLANKING, 45);
+ ret = v4l2_ctrl_s_ctrl(mt9v022->vblank, 45);
if (!ret)
ret = reg_write(client, MT9V022_WINDOW_WIDTH, rect.width);
if (!ret)
range = exp->maximum - exp->minimum;
exp->val = ((data - 1) * range + 239) / 479 + exp->minimum;
return 0;
+ case V4L2_CID_HBLANK:
+ data = reg_read(client, MT9V022_HORIZONTAL_BLANKING);
+ if (data < 0)
+ return -EIO;
+ ctrl->val = data;
+ return 0;
+ case V4L2_CID_VBLANK:
+ data = reg_read(client, MT9V022_VERTICAL_BLANKING);
+ if (data < 0)
+ return -EIO;
+ ctrl->val = data;
+ return 0;
}
return -EINVAL;
}
return -EIO;
}
return 0;
+ case V4L2_CID_HBLANK:
+ if (reg_write(client, MT9V022_HORIZONTAL_BLANKING,
+ ctrl->val) < 0)
+ return -EIO;
+ return 0;
+ case V4L2_CID_VBLANK:
+ if (reg_write(client, MT9V022_VERTICAL_BLANKING,
+ ctrl->val) < 0)
+ return -EIO;
+ return 0;
}
return -EINVAL;
}
goto ei2c;
}
+ mt9v022->chip_version = data;
+
mt9v022->reg = is_mt9v024(data) ? &mt9v024_register :
&mt9v022_register;
struct mt9v022 *mt9v022;
struct soc_camera_link *icl = soc_camera_i2c_to_link(client);
struct i2c_adapter *adapter = to_i2c_adapter(client->dev.parent);
+ struct mt9v022_platform_data *pdata = icl->priv;
int ret;
if (!icl) {
mt9v022->exposure = v4l2_ctrl_new_std(&mt9v022->hdl, &mt9v022_ctrl_ops,
V4L2_CID_EXPOSURE, 1, 255, 1, 255);
+ mt9v022->hblank = v4l2_ctrl_new_std(&mt9v022->hdl, &mt9v022_ctrl_ops,
+ V4L2_CID_HBLANK, MT9V022_HORIZONTAL_BLANKING_MIN,
+ MT9V022_HORIZONTAL_BLANKING_MAX, 1,
+ MT9V022_HORIZONTAL_BLANKING_DEF);
+
+ mt9v022->vblank = v4l2_ctrl_new_std(&mt9v022->hdl, &mt9v022_ctrl_ops,
+ V4L2_CID_VBLANK, MT9V022_VERTICAL_BLANKING_MIN,
+ MT9V022_VERTICAL_BLANKING_MAX, 1,
+ MT9V022_VERTICAL_BLANKING_DEF);
+
mt9v022->subdev.ctrl_handler = &mt9v022->hdl;
if (mt9v022->hdl.error) {
int err = mt9v022->hdl.error;
+ dev_err(&client->dev, "control initialisation err %d\n", err);
kfree(mt9v022);
return err;
}
mt9v022->chip_control = MT9V022_CHIP_CONTROL_DEFAULT;
/*
- * MT9V022 _really_ corrupts the first read out line.
- * TODO: verify on i.MX31
+ * On some platforms the first read out line is corrupted.
+ * Workaround it by skipping if indicated by platform data.
*/
- mt9v022->y_skip_top = 1;
+ mt9v022->y_skip_top = pdata ? pdata->y_skip_top : 0;
mt9v022->rect.left = MT9V022_COLUMN_SKIP;
mt9v022->rect.top = MT9V022_ROW_SKIP;
mt9v022->rect.width = MT9V022_MAX_WIDTH;