#define MT9M001_GLOBAL_GAIN 0x35
#define MT9M001_CHIP_ENABLE 0xF1
+#define MT9M001_MAX_WIDTH 1280
+#define MT9M001_MAX_HEIGHT 1024
+#define MT9M001_MIN_WIDTH 48
+#define MT9M001_MIN_HEIGHT 32
+#define MT9M001_COLUMN_SKIP 20
+#define MT9M001_ROW_SKIP 12
+
static const struct soc_camera_data_format mt9m001_colour_formats[] = {
/* Order important: first natively supported,
* second supported with a GPIO extender */
struct mt9m001 {
struct v4l2_subdev subdev;
+ struct v4l2_rect rect; /* Sensor window */
+ __u32 fourcc;
int model; /* V4L2_IDENT_MT9M001* codes from v4l2-chip-ident.h */
unsigned char autoexposure;
};
return reg_write(client, reg, ret & ~data);
}
-static int mt9m001_init(struct soc_camera_device *icd)
+static int mt9m001_init(struct i2c_client *client)
{
- struct i2c_client *client = to_i2c_client(to_soc_camera_control(icd));
int ret;
- dev_dbg(&icd->dev, "%s\n", __func__);
+ dev_dbg(&client->dev, "%s\n", __func__);
/*
* We don't know, whether platform provides reset,
return ret;
}
-static int mt9m001_release(struct soc_camera_device *icd)
-{
- struct i2c_client *client = to_i2c_client(to_soc_camera_control(icd));
-
- /* Disable the chip */
- reg_write(client, MT9M001_OUTPUT_CONTROL, 0);
-
- return 0;
-}
-
static int mt9m001_s_stream(struct v4l2_subdev *sd, int enable)
{
struct i2c_client *client = sd->priv;
return soc_camera_apply_sensor_flags(icl, flags);
}
-static int mt9m001_set_crop(struct soc_camera_device *icd,
- struct v4l2_rect *rect)
+static int mt9m001_s_crop(struct v4l2_subdev *sd, struct v4l2_crop *a)
{
- struct i2c_client *client = to_i2c_client(to_soc_camera_control(icd));
+ struct i2c_client *client = sd->priv;
struct mt9m001 *mt9m001 = to_mt9m001(client);
+ struct v4l2_rect rect = a->c;
+ struct soc_camera_device *icd = client->dev.platform_data;
int ret;
const u16 hblank = 9, vblank = 25;
+ if (mt9m001->fourcc == V4L2_PIX_FMT_SBGGR8 ||
+ mt9m001->fourcc == V4L2_PIX_FMT_SBGGR16)
+ /*
+ * Bayer format - even number of rows for simplicity,
+ * but let the user play with the top row.
+ */
+ rect.height = ALIGN(rect.height, 2);
+
+ /* Datasheet requirement: see register description */
+ rect.width = ALIGN(rect.width, 2);
+ rect.left = ALIGN(rect.left, 2);
+
+ soc_camera_limit_side(&rect.left, &rect.width,
+ MT9M001_COLUMN_SKIP, MT9M001_MIN_WIDTH, MT9M001_MAX_WIDTH);
+
+ soc_camera_limit_side(&rect.top, &rect.height,
+ MT9M001_ROW_SKIP, MT9M001_MIN_HEIGHT, MT9M001_MAX_HEIGHT);
+
/* Blanking and start values - default... */
ret = reg_write(client, MT9M001_HORIZONTAL_BLANKING, hblank);
if (!ret)
/* The caller provides a supported format, as verified per
* call to icd->try_fmt() */
if (!ret)
- ret = reg_write(client, MT9M001_COLUMN_START, rect->left);
+ ret = reg_write(client, MT9M001_COLUMN_START, rect.left);
if (!ret)
- ret = reg_write(client, MT9M001_ROW_START, rect->top);
+ ret = reg_write(client, MT9M001_ROW_START, rect.top);
if (!ret)
- ret = reg_write(client, MT9M001_WINDOW_WIDTH, rect->width - 1);
+ ret = reg_write(client, MT9M001_WINDOW_WIDTH, rect.width - 1);
if (!ret)
ret = reg_write(client, MT9M001_WINDOW_HEIGHT,
- rect->height + icd->y_skip_top - 1);
+ rect.height + icd->y_skip_top - 1);
if (!ret && mt9m001->autoexposure) {
ret = reg_write(client, MT9M001_SHUTTER_WIDTH,
- rect->height + icd->y_skip_top + vblank);
+ rect.height + icd->y_skip_top + vblank);
if (!ret) {
const struct v4l2_queryctrl *qctrl =
soc_camera_find_qctrl(icd->ops,
V4L2_CID_EXPOSURE);
- icd->exposure = (524 + (rect->height + icd->y_skip_top +
+ icd->exposure = (524 + (rect.height + icd->y_skip_top +
vblank - 1) *
(qctrl->maximum - qctrl->minimum)) /
1048 + qctrl->minimum;
}
}
+ if (!ret)
+ mt9m001->rect = rect;
+
return ret;
}
+static int mt9m001_g_crop(struct v4l2_subdev *sd, struct v4l2_crop *a)
+{
+ struct i2c_client *client = sd->priv;
+ struct mt9m001 *mt9m001 = to_mt9m001(client);
+
+ a->c = mt9m001->rect;
+ a->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
+
+ return 0;
+}
+
+static int mt9m001_cropcap(struct v4l2_subdev *sd, struct v4l2_cropcap *a)
+{
+ a->bounds.left = MT9M001_COLUMN_SKIP;
+ a->bounds.top = MT9M001_ROW_SKIP;
+ a->bounds.width = MT9M001_MAX_WIDTH;
+ a->bounds.height = MT9M001_MAX_HEIGHT;
+ a->defrect = a->bounds;
+ a->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
+ a->pixelaspect.numerator = 1;
+ a->pixelaspect.denominator = 1;
+
+ return 0;
+}
+
+static int mt9m001_g_fmt(struct v4l2_subdev *sd, struct v4l2_format *f)
+{
+ struct i2c_client *client = sd->priv;
+ struct mt9m001 *mt9m001 = to_mt9m001(client);
+ struct v4l2_pix_format *pix = &f->fmt.pix;
+
+ pix->width = mt9m001->rect.width;
+ pix->height = mt9m001->rect.height;
+ pix->pixelformat = mt9m001->fourcc;
+ pix->field = V4L2_FIELD_NONE;
+ pix->colorspace = V4L2_COLORSPACE_SRGB;
+
+ return 0;
+}
+
static int mt9m001_s_fmt(struct v4l2_subdev *sd, struct v4l2_format *f)
{
struct i2c_client *client = sd->priv;
- struct soc_camera_device *icd = client->dev.platform_data;
- struct v4l2_rect rect = {
- .left = icd->rect_current.left,
- .top = icd->rect_current.top,
- .width = f->fmt.pix.width,
- .height = f->fmt.pix.height,
+ struct mt9m001 *mt9m001 = to_mt9m001(client);
+ struct v4l2_pix_format *pix = &f->fmt.pix;
+ struct v4l2_crop a = {
+ .c = {
+ .left = mt9m001->rect.left,
+ .top = mt9m001->rect.top,
+ .width = pix->width,
+ .height = pix->height,
+ },
};
+ int ret;
/* No support for scaling so far, just crop. TODO: use skipping */
- return mt9m001_set_crop(icd, &rect);
+ ret = mt9m001_s_crop(sd, &a);
+ if (!ret) {
+ pix->width = mt9m001->rect.width;
+ pix->height = mt9m001->rect.height;
+ mt9m001->fourcc = pix->pixelformat;
+ }
+
+ return ret;
}
static int mt9m001_try_fmt(struct v4l2_subdev *sd, struct v4l2_format *f)
struct soc_camera_device *icd = client->dev.platform_data;
struct v4l2_pix_format *pix = &f->fmt.pix;
- v4l_bound_align_image(&pix->width, 48, 1280, 1,
- &pix->height, 32 + icd->y_skip_top,
- 1024 + icd->y_skip_top, 0, 0);
+ v4l_bound_align_image(&pix->width, MT9M001_MIN_WIDTH,
+ MT9M001_MAX_WIDTH, 1,
+ &pix->height, MT9M001_MIN_HEIGHT + icd->y_skip_top,
+ MT9M001_MAX_HEIGHT + icd->y_skip_top, 0, 0);
+
+ if (pix->pixelformat == V4L2_PIX_FMT_SBGGR8 ||
+ pix->pixelformat == V4L2_PIX_FMT_SBGGR16)
+ pix->height = ALIGN(pix->height - 1, 2);
return 0;
}
};
static struct soc_camera_ops mt9m001_ops = {
- .init = mt9m001_init,
- .release = mt9m001_release,
- .set_crop = mt9m001_set_crop,
.set_bus_param = mt9m001_set_bus_param,
.query_bus_param = mt9m001_query_bus_param,
.controls = mt9m001_controls,
unsigned long range = qctrl->default_value - qctrl->minimum;
data = ((ctrl->value - qctrl->minimum) * 8 + range / 2) / range;
- dev_dbg(&icd->dev, "Setting gain %d\n", data);
+ dev_dbg(&client->dev, "Setting gain %d\n", data);
data = reg_write(client, MT9M001_GLOBAL_GAIN, data);
if (data < 0)
return -EIO;
else
data = ((gain - 64) * 7 + 28) / 56 + 96;
- dev_dbg(&icd->dev, "Setting gain from %d to %d\n",
+ dev_dbg(&client->dev, "Setting gain from %d to %d\n",
reg_read(client, MT9M001_GLOBAL_GAIN), data);
data = reg_write(client, MT9M001_GLOBAL_GAIN, data);
if (data < 0)
unsigned long shutter = ((ctrl->value - qctrl->minimum) * 1048 +
range / 2) / range + 1;
- dev_dbg(&icd->dev, "Setting shutter width from %d to %lu\n",
- reg_read(client, MT9M001_SHUTTER_WIDTH), shutter);
+ dev_dbg(&client->dev,
+ "Setting shutter width from %d to %lu\n",
+ reg_read(client, MT9M001_SHUTTER_WIDTH),
+ shutter);
if (reg_write(client, MT9M001_SHUTTER_WIDTH, shutter) < 0)
return -EIO;
icd->exposure = ctrl->value;
if (ctrl->value) {
const u16 vblank = 25;
if (reg_write(client, MT9M001_SHUTTER_WIDTH,
- icd->rect_current.height +
+ mt9m001->rect.height +
icd->y_skip_top + vblank) < 0)
return -EIO;
qctrl = soc_camera_find_qctrl(icd->ops, V4L2_CID_EXPOSURE);
- icd->exposure = (524 + (icd->rect_current.height +
+ icd->exposure = (524 + (mt9m001->rect.height +
icd->y_skip_top + vblank - 1) *
(qctrl->maximum - qctrl->minimum)) /
1048 + qctrl->minimum;
struct soc_camera_link *icl = to_soc_camera_link(icd);
s32 data;
unsigned long flags;
+ int ret;
/* We must have a parent by now. And it cannot be a wrong one.
* So this entire test is completely redundant. */
/* Enable the chip */
data = reg_write(client, MT9M001_CHIP_ENABLE, 1);
- dev_dbg(&icd->dev, "write: %d\n", data);
+ dev_dbg(&client->dev, "write: %d\n", data);
/* Read out the chip version register */
data = reg_read(client, MT9M001_CHIP_VERSION);
icd->formats = mt9m001_monochrome_formats;
break;
default:
- dev_err(&icd->dev,
+ dev_err(&client->dev,
"No MT9M001 chip detected, register read %x\n", data);
return -ENODEV;
}
if (flags & SOCAM_DATAWIDTH_8)
icd->num_formats++;
- dev_info(&icd->dev, "Detected a MT9M001 chip ID %x (%s)\n", data,
+ mt9m001->fourcc = icd->formats->fourcc;
+
+ dev_info(&client->dev, "Detected a MT9M001 chip ID %x (%s)\n", data,
data == 0x8431 ? "C12STM" : "C12ST");
- return 0;
+ ret = mt9m001_init(client);
+ if (ret < 0)
+ dev_err(&client->dev, "Failed to initialise the camera\n");
+
+ return ret;
}
static void mt9m001_video_remove(struct soc_camera_device *icd)
{
- struct i2c_client *client = to_i2c_client(to_soc_camera_control(icd));
struct soc_camera_link *icl = to_soc_camera_link(icd);
- dev_dbg(&icd->dev, "Video %x removed: %p, %p\n", client->addr,
+ dev_dbg(&icd->dev, "Video removed: %p, %p\n",
icd->dev.parent, icd->vdev);
if (icl->free_bus)
icl->free_bus(icl);
static struct v4l2_subdev_video_ops mt9m001_subdev_video_ops = {
.s_stream = mt9m001_s_stream,
.s_fmt = mt9m001_s_fmt,
+ .g_fmt = mt9m001_g_fmt,
.try_fmt = mt9m001_try_fmt,
+ .s_crop = mt9m001_s_crop,
+ .g_crop = mt9m001_g_crop,
+ .cropcap = mt9m001_cropcap,
};
static struct v4l2_subdev_ops mt9m001_subdev_ops = {
/* Second stage probe - when a capture adapter is there */
icd->ops = &mt9m001_ops;
- icd->rect_max.left = 20;
- icd->rect_max.top = 12;
- icd->rect_max.width = 1280;
- icd->rect_max.height = 1024;
- icd->rect_current.left = 20;
- icd->rect_current.top = 12;
- icd->width_min = 48;
- icd->height_min = 32;
icd->y_skip_top = 1;
+
+ mt9m001->rect.left = MT9M001_COLUMN_SKIP;
+ mt9m001->rect.top = MT9M001_ROW_SKIP;
+ mt9m001->rect.width = MT9M001_MAX_WIDTH;
+ mt9m001->rect.height = MT9M001_MAX_HEIGHT;
+
/* Simulated autoexposure. If enabled, we calculate shutter width
* ourselves in the driver based on vertical blanking and frame width */
mt9m001->autoexposure = 1;
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff