static int mt9m001_init(struct soc_camera_device *icd)
{
+ struct mt9m001 *mt9m001 = container_of(icd, struct mt9m001, icd);
+ struct soc_camera_link *icl = mt9m001->client->dev.platform_data;
int ret;
- /* Disable chip, synchronous option update */
- dev_dbg(icd->vdev->dev, "%s\n", __func__);
+ dev_dbg(icd->vdev->parent, "%s\n", __func__);
+
+ if (icl->power) {
+ ret = icl->power(&mt9m001->client->dev, 1);
+ if (ret < 0) {
+ dev_err(icd->vdev->parent,
+ "Platform failed to power-on the camera.\n");
+ return ret;
+ }
+ }
+
+ /* The camera could have been already on, we reset it additionally */
+ if (icl->reset)
+ ret = icl->reset(&mt9m001->client->dev);
+ else
+ ret = -ENODEV;
- ret = reg_write(icd, MT9M001_RESET, 1);
- if (ret >= 0)
- ret = reg_write(icd, MT9M001_RESET, 0);
- if (ret >= 0)
+ if (ret < 0) {
+ /* Either no platform reset, or platform reset failed */
+ ret = reg_write(icd, MT9M001_RESET, 1);
+ if (!ret)
+ ret = reg_write(icd, MT9M001_RESET, 0);
+ }
+ /* Disable chip, synchronous option update */
+ if (!ret)
ret = reg_write(icd, MT9M001_OUTPUT_CONTROL, 0);
- return ret >= 0 ? 0 : -EIO;
+ return ret;
}
static int mt9m001_release(struct soc_camera_device *icd)
{
+ struct mt9m001 *mt9m001 = container_of(icd, struct mt9m001, icd);
+ struct soc_camera_link *icl = mt9m001->client->dev.platform_data;
+
/* Disable the chip */
reg_write(icd, MT9M001_OUTPUT_CONTROL, 0);
+
+ if (icl->power)
+ icl->power(&mt9m001->client->dev, 0);
+
return 0;
}
/* Blanking and start values - default... */
ret = reg_write(icd, MT9M001_HORIZONTAL_BLANKING, hblank);
- if (ret >= 0)
+ if (!ret)
ret = reg_write(icd, MT9M001_VERTICAL_BLANKING, vblank);
/* The caller provides a supported format, as verified per
* call to icd->try_fmt_cap() */
- if (ret >= 0)
+ if (!ret)
ret = reg_write(icd, MT9M001_COLUMN_START, rect->left);
- if (ret >= 0)
+ if (!ret)
ret = reg_write(icd, MT9M001_ROW_START, rect->top);
- if (ret >= 0)
+ if (!ret)
ret = reg_write(icd, MT9M001_WINDOW_WIDTH, rect->width - 1);
- if (ret >= 0)
+ if (!ret)
ret = reg_write(icd, MT9M001_WINDOW_HEIGHT,
rect->height + icd->y_skip_top - 1);
- if (ret >= 0 && mt9m001->autoexposure) {
+ if (!ret && mt9m001->autoexposure) {
ret = reg_write(icd, MT9M001_SHUTTER_WIDTH,
rect->height + icd->y_skip_top + vblank);
- if (ret >= 0) {
+ if (!ret) {
const struct v4l2_queryctrl *qctrl =
soc_camera_find_qctrl(icd->ops,
V4L2_CID_EXPOSURE);
}
}
- return ret < 0 ? ret : 0;
+ return ret;
}
static int mt9m001_try_fmt_cap(struct soc_camera_device *icd,