#include <linux/i2c.h>
#include <linux/log2.h>
-#include <media/v4l2-common.h>
+#include <media/v4l2-subdev.h>
#include <media/v4l2-chip-ident.h>
#include <media/soc_camera.h>
/* mt9t031 i2c address 0x5d
- * The platform has to define i2c_board_info
- * and call i2c_register_board_info() */
+ * The platform has to define i2c_board_info and link to it from
+ * struct soc_camera_link */
/* mt9t031 selected register addresses */
#define MT9T031_CHIP_VERSION 0x00
#define MT9T031_MAX_HEIGHT 1536
#define MT9T031_MAX_WIDTH 2048
#define MT9T031_MIN_HEIGHT 2
-#define MT9T031_MIN_WIDTH 2
+#define MT9T031_MIN_WIDTH 18
#define MT9T031_HORIZONTAL_BLANK 142
#define MT9T031_VERTICAL_BLANK 25
#define MT9T031_COLUMN_SKIP 32
};
struct mt9t031 {
- struct i2c_client *client;
- struct soc_camera_device icd;
+ struct v4l2_subdev subdev;
+ struct v4l2_rect rect; /* Sensor window */
int model; /* V4L2_IDENT_MT9T031* codes from v4l2-chip-ident.h */
- unsigned char autoexposure;
u16 xskip;
u16 yskip;
+ unsigned int gain;
+ unsigned int exposure;
+ unsigned char autoexposure;
};
+static struct mt9t031 *to_mt9t031(const struct i2c_client *client)
+{
+ return container_of(i2c_get_clientdata(client), struct mt9t031, subdev);
+}
+
static int reg_read(struct i2c_client *client, const u8 reg)
{
s32 data = i2c_smbus_read_word_data(client, reg);
return ret < 0 ? ret : 0;
}
-static int mt9t031_init(struct soc_camera_device *icd)
+static int mt9t031_idle(struct i2c_client *client)
{
- struct i2c_client *client = to_i2c_client(icd->control);
- struct soc_camera_link *icl = client->dev.platform_data;
int ret;
- if (icl->power) {
- ret = icl->power(&client->dev, 1);
- if (ret < 0) {
- dev_err(icd->vdev->parent,
- "Platform failed to power-on the camera.\n");
- return ret;
- }
- }
-
/* Disable chip output, synchronous option update */
ret = reg_write(client, MT9T031_RESET, 1);
if (ret >= 0)
if (ret >= 0)
ret = reg_clear(client, MT9T031_OUTPUT_CONTROL, 2);
- if (ret < 0 && icl->power)
- icl->power(&client->dev, 0);
-
return ret >= 0 ? 0 : -EIO;
}
-static int mt9t031_release(struct soc_camera_device *icd)
+static int mt9t031_disable(struct i2c_client *client)
{
- struct i2c_client *client = to_i2c_client(icd->control);
- struct soc_camera_link *icl = client->dev.platform_data;
-
/* Disable the chip */
reg_clear(client, MT9T031_OUTPUT_CONTROL, 2);
- if (icl->power)
- icl->power(&client->dev, 0);
-
return 0;
}
-static int mt9t031_start_capture(struct soc_camera_device *icd)
+static int mt9t031_s_stream(struct v4l2_subdev *sd, int enable)
{
- struct i2c_client *client = to_i2c_client(icd->control);
-
- /* Switch to master "normal" mode */
- if (reg_set(client, MT9T031_OUTPUT_CONTROL, 2) < 0)
- return -EIO;
- return 0;
-}
+ struct i2c_client *client = sd->priv;
+ int ret;
-static int mt9t031_stop_capture(struct soc_camera_device *icd)
-{
- struct i2c_client *client = to_i2c_client(icd->control);
+ if (enable)
+ /* Switch to master "normal" mode */
+ ret = reg_set(client, MT9T031_OUTPUT_CONTROL, 2);
+ else
+ /* Stop sensor readout */
+ ret = reg_clear(client, MT9T031_OUTPUT_CONTROL, 2);
- /* Stop sensor readout */
- if (reg_clear(client, MT9T031_OUTPUT_CONTROL, 2) < 0)
+ if (ret < 0)
return -EIO;
+
return 0;
}
static int mt9t031_set_bus_param(struct soc_camera_device *icd,
unsigned long flags)
{
- struct i2c_client *client = to_i2c_client(icd->control);
+ struct i2c_client *client = to_i2c_client(to_soc_camera_control(icd));
/* The caller should have queried our parameters, check anyway */
if (flags & ~MT9T031_BUS_PARAM)
static unsigned long mt9t031_query_bus_param(struct soc_camera_device *icd)
{
- struct mt9t031 *mt9t031 = container_of(icd, struct mt9t031, icd);
- struct soc_camera_link *icl = mt9t031->client->dev.platform_data;
+ struct soc_camera_link *icl = to_soc_camera_link(icd);
return soc_camera_apply_sensor_flags(icl, MT9T031_BUS_PARAM);
}
-/* Round up minima and round down maxima */
-static void recalculate_limits(struct soc_camera_device *icd,
- u16 xskip, u16 yskip)
+/* target must be _even_ */
+static u16 mt9t031_skip(s32 *source, s32 target, s32 max)
{
- icd->x_min = (MT9T031_COLUMN_SKIP + xskip - 1) / xskip;
- icd->y_min = (MT9T031_ROW_SKIP + yskip - 1) / yskip;
- icd->width_min = (MT9T031_MIN_WIDTH + xskip - 1) / xskip;
- icd->height_min = (MT9T031_MIN_HEIGHT + yskip - 1) / yskip;
- icd->width_max = MT9T031_MAX_WIDTH / xskip;
- icd->height_max = MT9T031_MAX_HEIGHT / yskip;
+ unsigned int skip;
+
+ if (*source < target + target / 2) {
+ *source = target;
+ return 1;
+ }
+
+ skip = min(max, *source + target / 2) / target;
+ if (skip > 8)
+ skip = 8;
+ *source = target * skip;
+
+ return skip;
}
+/* rect is the sensor rectangle, the caller guarantees parameter validity */
static int mt9t031_set_params(struct soc_camera_device *icd,
struct v4l2_rect *rect, u16 xskip, u16 yskip)
{
- struct i2c_client *client = to_i2c_client(icd->control);
- struct mt9t031 *mt9t031 = container_of(icd, struct mt9t031, icd);
+ struct i2c_client *client = to_i2c_client(to_soc_camera_control(icd));
+ struct mt9t031 *mt9t031 = to_mt9t031(client);
int ret;
- u16 xbin, ybin, width, height, left, top;
+ u16 xbin, ybin;
const u16 hblank = MT9T031_HORIZONTAL_BLANK,
vblank = MT9T031_VERTICAL_BLANK;
- /* Make sure we don't exceed sensor limits */
- if (rect->left + rect->width > icd->width_max)
- rect->left = (icd->width_max - rect->width) / 2 + icd->x_min;
-
- if (rect->top + rect->height > icd->height_max)
- rect->top = (icd->height_max - rect->height) / 2 + icd->y_min;
-
- width = rect->width * xskip;
- height = rect->height * yskip;
- left = rect->left * xskip;
- top = rect->top * yskip;
-
xbin = min(xskip, (u16)3);
ybin = min(yskip, (u16)3);
- dev_dbg(&icd->dev, "xskip %u, width %u/%u, yskip %u, height %u/%u\n",
- xskip, width, rect->width, yskip, height, rect->height);
-
- /* Could just do roundup(rect->left, [xy]bin * 2); but this is cheaper */
+ /*
+ * Could just do roundup(rect->left, [xy]bin * 2); but this is cheaper.
+ * There is always a valid suitably aligned value. The worst case is
+ * xbin = 3, width = 2048. Then we will start at 36, the last read out
+ * pixel will be 2083, which is < 2085 - first black pixel.
+ *
+ * MT9T031 datasheet imposes window left border alignment, depending on
+ * the selected xskip. Failing to conform to this requirement produces
+ * dark horizontal stripes in the image. However, even obeying to this
+ * requirement doesn't eliminate the stripes in all configurations. They
+ * appear "locally reproducibly," but can differ between tests under
+ * different lighting conditions.
+ */
switch (xbin) {
- case 2:
- left = (left + 3) & ~3;
+ case 1:
+ rect->left &= ~1;
break;
- case 3:
- left = roundup(left, 6);
- }
-
- switch (ybin) {
case 2:
- top = (top + 3) & ~3;
+ rect->left &= ~3;
break;
case 3:
- top = roundup(top, 6);
+ rect->left = rect->left > roundup(MT9T031_COLUMN_SKIP, 6) ?
+ (rect->left / 6) * 6 : roundup(MT9T031_COLUMN_SKIP, 6);
}
+ rect->top &= ~1;
+
+ dev_dbg(&client->dev, "skip %u:%u, rect %ux%u@%u:%u\n",
+ xskip, yskip, rect->width, rect->height, rect->left, rect->top);
+
/* Disable register update, reconfigure atomically */
ret = reg_set(client, MT9T031_OUTPUT_CONTROL, 1);
if (ret < 0)
ret = reg_write(client, MT9T031_ROW_ADDRESS_MODE,
((ybin - 1) << 4) | (yskip - 1));
}
- dev_dbg(&icd->dev, "new physical left %u, top %u\n", left, top);
+ dev_dbg(&client->dev, "new physical left %u, top %u\n",
+ rect->left, rect->top);
/* The caller provides a supported format, as guaranteed by
* icd->try_fmt_cap(), soc_camera_s_crop() and soc_camera_cropcap() */
if (ret >= 0)
- ret = reg_write(client, MT9T031_COLUMN_START, left);
+ ret = reg_write(client, MT9T031_COLUMN_START, rect->left);
if (ret >= 0)
- ret = reg_write(client, MT9T031_ROW_START, top);
+ ret = reg_write(client, MT9T031_ROW_START, rect->top);
if (ret >= 0)
- ret = reg_write(client, MT9T031_WINDOW_WIDTH, width - 1);
+ ret = reg_write(client, MT9T031_WINDOW_WIDTH, rect->width - 1);
if (ret >= 0)
ret = reg_write(client, MT9T031_WINDOW_HEIGHT,
- height + icd->y_skip_top - 1);
+ rect->height + icd->y_skip_top - 1);
if (ret >= 0 && mt9t031->autoexposure) {
- ret = set_shutter(client, height + icd->y_skip_top + vblank);
+ unsigned int total_h = rect->height + icd->y_skip_top + vblank;
+ ret = set_shutter(client, total_h);
if (ret >= 0) {
const u32 shutter_max = MT9T031_MAX_HEIGHT + vblank;
const struct v4l2_queryctrl *qctrl =
soc_camera_find_qctrl(icd->ops,
V4L2_CID_EXPOSURE);
- icd->exposure = (shutter_max / 2 + (height +
- icd->y_skip_top + vblank - 1) *
- (qctrl->maximum - qctrl->minimum)) /
+ mt9t031->exposure = (shutter_max / 2 + (total_h - 1) *
+ (qctrl->maximum - qctrl->minimum)) /
shutter_max + qctrl->minimum;
}
}
if (ret >= 0)
ret = reg_clear(client, MT9T031_OUTPUT_CONTROL, 1);
+ if (ret >= 0) {
+ mt9t031->rect = *rect;
+ mt9t031->xskip = xskip;
+ mt9t031->yskip = yskip;
+ }
+
return ret < 0 ? ret : 0;
}
-static int mt9t031_set_crop(struct soc_camera_device *icd,
- struct v4l2_rect *rect)
+static int mt9t031_s_crop(struct v4l2_subdev *sd, struct v4l2_crop *a)
{
- struct mt9t031 *mt9t031 = container_of(icd, struct mt9t031, icd);
+ struct v4l2_rect rect = a->c;
+ struct i2c_client *client = sd->priv;
+ struct mt9t031 *mt9t031 = to_mt9t031(client);
+ struct soc_camera_device *icd = client->dev.platform_data;
+
+ rect.width = ALIGN(rect.width, 2);
+ rect.height = ALIGN(rect.height, 2);
+
+ soc_camera_limit_side(&rect.left, &rect.width,
+ MT9T031_COLUMN_SKIP, MT9T031_MIN_WIDTH, MT9T031_MAX_WIDTH);
+
+ soc_camera_limit_side(&rect.top, &rect.height,
+ MT9T031_ROW_SKIP, MT9T031_MIN_HEIGHT, MT9T031_MAX_HEIGHT);
- /* CROP - no change in scaling, or in limits */
- return mt9t031_set_params(icd, rect, mt9t031->xskip, mt9t031->yskip);
+ return mt9t031_set_params(icd, &rect, mt9t031->xskip, mt9t031->yskip);
}
-static int mt9t031_set_fmt(struct soc_camera_device *icd,
- struct v4l2_format *f)
+static int mt9t031_g_crop(struct v4l2_subdev *sd, struct v4l2_crop *a)
{
- struct mt9t031 *mt9t031 = container_of(icd, struct mt9t031, icd);
- int ret;
- u16 xskip, yskip;
- struct v4l2_rect rect = {
- .left = icd->x_current,
- .top = icd->y_current,
- .width = f->fmt.pix.width,
- .height = f->fmt.pix.height,
- };
+ struct i2c_client *client = sd->priv;
+ struct mt9t031 *mt9t031 = to_mt9t031(client);
- /*
- * try_fmt has put rectangle within limits.
- * S_FMT - use binning and skipping for scaling, recalculate
- * limits, used for cropping
- */
- /* Is this more optimal than just a division? */
- for (xskip = 8; xskip > 1; xskip--)
- if (rect.width * xskip <= MT9T031_MAX_WIDTH)
- break;
+ a->c = mt9t031->rect;
+ a->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
- for (yskip = 8; yskip > 1; yskip--)
- if (rect.height * yskip <= MT9T031_MAX_HEIGHT)
- break;
+ return 0;
+}
- recalculate_limits(icd, xskip, yskip);
+static int mt9t031_cropcap(struct v4l2_subdev *sd, struct v4l2_cropcap *a)
+{
+ a->bounds.left = MT9T031_COLUMN_SKIP;
+ a->bounds.top = MT9T031_ROW_SKIP;
+ a->bounds.width = MT9T031_MAX_WIDTH;
+ a->bounds.height = MT9T031_MAX_HEIGHT;
+ a->defrect = a->bounds;
+ a->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
+ a->pixelaspect.numerator = 1;
+ a->pixelaspect.denominator = 1;
- ret = mt9t031_set_params(icd, &rect, xskip, yskip);
- if (!ret) {
- mt9t031->xskip = xskip;
- mt9t031->yskip = yskip;
- }
+ return 0;
+}
- return ret;
+static int mt9t031_g_fmt(struct v4l2_subdev *sd, struct v4l2_format *f)
+{
+ struct i2c_client *client = sd->priv;
+ struct mt9t031 *mt9t031 = to_mt9t031(client);
+ struct v4l2_pix_format *pix = &f->fmt.pix;
+
+ pix->width = mt9t031->rect.width / mt9t031->xskip;
+ pix->height = mt9t031->rect.height / mt9t031->yskip;
+ pix->pixelformat = V4L2_PIX_FMT_SGRBG10;
+ pix->field = V4L2_FIELD_NONE;
+ pix->colorspace = V4L2_COLORSPACE_SRGB;
+
+ return 0;
+}
+
+static int mt9t031_s_fmt(struct v4l2_subdev *sd, struct v4l2_format *f)
+{
+ struct i2c_client *client = sd->priv;
+ struct mt9t031 *mt9t031 = to_mt9t031(client);
+ struct soc_camera_device *icd = client->dev.platform_data;
+ struct v4l2_pix_format *pix = &f->fmt.pix;
+ u16 xskip, yskip;
+ struct v4l2_rect rect = mt9t031->rect;
+
+ /*
+ * try_fmt has put width and height within limits.
+ * S_FMT: use binning and skipping for scaling
+ */
+ xskip = mt9t031_skip(&rect.width, pix->width, MT9T031_MAX_WIDTH);
+ yskip = mt9t031_skip(&rect.height, pix->height, MT9T031_MAX_HEIGHT);
+
+ /* mt9t031_set_params() doesn't change width and height */
+ return mt9t031_set_params(icd, &rect, xskip, yskip);
}
-static int mt9t031_try_fmt(struct soc_camera_device *icd,
- struct v4l2_format *f)
+/*
+ * If a user window larger than sensor window is requested, we'll increase the
+ * sensor window.
+ */
+static int mt9t031_try_fmt(struct v4l2_subdev *sd, struct v4l2_format *f)
{
struct v4l2_pix_format *pix = &f->fmt.pix;
return 0;
}
-static int mt9t031_get_chip_id(struct soc_camera_device *icd,
- struct v4l2_dbg_chip_ident *id)
+static int mt9t031_g_chip_ident(struct v4l2_subdev *sd,
+ struct v4l2_dbg_chip_ident *id)
{
- struct mt9t031 *mt9t031 = container_of(icd, struct mt9t031, icd);
+ struct i2c_client *client = sd->priv;
+ struct mt9t031 *mt9t031 = to_mt9t031(client);
if (id->match.type != V4L2_CHIP_MATCH_I2C_ADDR)
return -EINVAL;
- if (id->match.addr != mt9t031->client->addr)
+ if (id->match.addr != client->addr)
return -ENODEV;
id->ident = mt9t031->model;
}
#ifdef CONFIG_VIDEO_ADV_DEBUG
-static int mt9t031_get_register(struct soc_camera_device *icd,
- struct v4l2_dbg_register *reg)
+static int mt9t031_g_register(struct v4l2_subdev *sd,
+ struct v4l2_dbg_register *reg)
{
- struct i2c_client *client = to_i2c_client(icd->control);
+ struct i2c_client *client = sd->priv;
if (reg->match.type != V4L2_CHIP_MATCH_I2C_ADDR || reg->reg > 0xff)
return -EINVAL;
return 0;
}
-static int mt9t031_set_register(struct soc_camera_device *icd,
- struct v4l2_dbg_register *reg)
+static int mt9t031_s_register(struct v4l2_subdev *sd,
+ struct v4l2_dbg_register *reg)
{
- struct i2c_client *client = to_i2c_client(icd->control);
+ struct i2c_client *client = sd->priv;
if (reg->match.type != V4L2_CHIP_MATCH_I2C_ADDR || reg->reg > 0xff)
return -EINVAL;
}
};
-static int mt9t031_video_probe(struct soc_camera_device *);
-static void mt9t031_video_remove(struct soc_camera_device *);
-static int mt9t031_get_control(struct soc_camera_device *, struct v4l2_control *);
-static int mt9t031_set_control(struct soc_camera_device *, struct v4l2_control *);
-
static struct soc_camera_ops mt9t031_ops = {
- .owner = THIS_MODULE,
- .probe = mt9t031_video_probe,
- .remove = mt9t031_video_remove,
- .init = mt9t031_init,
- .release = mt9t031_release,
- .start_capture = mt9t031_start_capture,
- .stop_capture = mt9t031_stop_capture,
- .set_crop = mt9t031_set_crop,
- .set_fmt = mt9t031_set_fmt,
- .try_fmt = mt9t031_try_fmt,
.set_bus_param = mt9t031_set_bus_param,
.query_bus_param = mt9t031_query_bus_param,
.controls = mt9t031_controls,
.num_controls = ARRAY_SIZE(mt9t031_controls),
- .get_control = mt9t031_get_control,
- .set_control = mt9t031_set_control,
- .get_chip_id = mt9t031_get_chip_id,
-#ifdef CONFIG_VIDEO_ADV_DEBUG
- .get_register = mt9t031_get_register,
- .set_register = mt9t031_set_register,
-#endif
};
-static int mt9t031_get_control(struct soc_camera_device *icd, struct v4l2_control *ctrl)
+static int mt9t031_g_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl)
{
- struct i2c_client *client = to_i2c_client(icd->control);
- struct mt9t031 *mt9t031 = container_of(icd, struct mt9t031, icd);
+ struct i2c_client *client = sd->priv;
+ struct mt9t031 *mt9t031 = to_mt9t031(client);
int data;
switch (ctrl->id) {
case V4L2_CID_EXPOSURE_AUTO:
ctrl->value = mt9t031->autoexposure;
break;
+ case V4L2_CID_GAIN:
+ ctrl->value = mt9t031->gain;
+ break;
+ case V4L2_CID_EXPOSURE:
+ ctrl->value = mt9t031->exposure;
+ break;
}
return 0;
}
-static int mt9t031_set_control(struct soc_camera_device *icd, struct v4l2_control *ctrl)
+static int mt9t031_s_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl)
{
- struct i2c_client *client = to_i2c_client(icd->control);
- struct mt9t031 *mt9t031 = container_of(icd, struct mt9t031, icd);
+ struct i2c_client *client = sd->priv;
+ struct mt9t031 *mt9t031 = to_mt9t031(client);
+ struct soc_camera_device *icd = client->dev.platform_data;
const struct v4l2_queryctrl *qctrl;
int data;
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, MT9T031_GLOBAL_GAIN, data);
if (data < 0)
return -EIO;
/* calculated gain 65..1024 -> (1..120) << 8 + 0x60 */
data = (((gain - 64 + 7) * 32) & 0xff00) | 0x60;
- dev_dbg(&icd->dev, "Setting gain from 0x%x to 0x%x\n",
+ dev_dbg(&client->dev, "Set gain from 0x%x to 0x%x\n",
reg_read(client, MT9T031_GLOBAL_GAIN), data);
data = reg_write(client, MT9T031_GLOBAL_GAIN, data);
if (data < 0)
}
/* Success */
- icd->gain = ctrl->value;
+ mt9t031->gain = ctrl->value;
break;
case V4L2_CID_EXPOSURE:
/* mt9t031 has maximum == default */
u32 old;
get_shutter(client, &old);
- dev_dbg(&icd->dev, "Setting shutter width from %u to %u\n",
+ dev_dbg(&client->dev, "Set shutter from %u to %u\n",
old, shutter);
if (set_shutter(client, shutter) < 0)
return -EIO;
- icd->exposure = ctrl->value;
+ mt9t031->exposure = ctrl->value;
mt9t031->autoexposure = 0;
}
break;
if (ctrl->value) {
const u16 vblank = MT9T031_VERTICAL_BLANK;
const u32 shutter_max = MT9T031_MAX_HEIGHT + vblank;
- if (set_shutter(client, icd->height +
- icd->y_skip_top + vblank) < 0)
+ unsigned int total_h = mt9t031->rect.height +
+ icd->y_skip_top + vblank;
+
+ if (set_shutter(client, total_h) < 0)
return -EIO;
qctrl = soc_camera_find_qctrl(icd->ops, V4L2_CID_EXPOSURE);
- icd->exposure = (shutter_max / 2 + (icd->height +
- icd->y_skip_top + vblank - 1) *
- (qctrl->maximum - qctrl->minimum)) /
+ mt9t031->exposure = (shutter_max / 2 + (total_h - 1) *
+ (qctrl->maximum - qctrl->minimum)) /
shutter_max + qctrl->minimum;
mt9t031->autoexposure = 1;
} else
/* Interface active, can use i2c. If it fails, it can indeed mean, that
* this wasn't our capture interface, so, we wait for the right one */
-static int mt9t031_video_probe(struct soc_camera_device *icd)
+static int mt9t031_video_probe(struct i2c_client *client)
{
- struct i2c_client *client = to_i2c_client(icd->control);
- struct mt9t031 *mt9t031 = container_of(icd, struct mt9t031, icd);
+ struct soc_camera_device *icd = client->dev.platform_data;
+ struct mt9t031 *mt9t031 = to_mt9t031(client);
s32 data;
int ret;
- /* We must have a parent by now. And it cannot be a wrong one.
- * So this entire test is completely redundant. */
- if (!icd->dev.parent ||
- to_soc_camera_host(icd->dev.parent)->nr != icd->iface)
- return -ENODEV;
-
/* Enable the chip */
data = reg_write(client, MT9T031_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, MT9T031_CHIP_VERSION);
icd->num_formats = ARRAY_SIZE(mt9t031_colour_formats);
break;
default:
- ret = -ENODEV;
- dev_err(&icd->dev,
+ dev_err(&client->dev,
"No MT9T031 chip detected, register read %x\n", data);
- goto ei2c;
+ return -ENODEV;
}
- dev_info(&icd->dev, "Detected a MT9T031 chip ID %x\n", data);
+ dev_info(&client->dev, "Detected a MT9T031 chip ID %x\n", data);
- /* Now that we know the model, we can start video */
- ret = soc_camera_video_start(icd);
- if (ret)
- goto evstart;
+ ret = mt9t031_idle(client);
+ if (ret < 0)
+ dev_err(&client->dev, "Failed to initialise the camera\n");
- return 0;
+ /* mt9t031_idle() has reset the chip to default. */
+ mt9t031->exposure = 255;
+ mt9t031->gain = 64;
-evstart:
-ei2c:
return ret;
}
-static void mt9t031_video_remove(struct soc_camera_device *icd)
-{
- struct mt9t031 *mt9t031 = container_of(icd, struct mt9t031, icd);
+static struct v4l2_subdev_core_ops mt9t031_subdev_core_ops = {
+ .g_ctrl = mt9t031_g_ctrl,
+ .s_ctrl = mt9t031_s_ctrl,
+ .g_chip_ident = mt9t031_g_chip_ident,
+#ifdef CONFIG_VIDEO_ADV_DEBUG
+ .g_register = mt9t031_g_register,
+ .s_register = mt9t031_s_register,
+#endif
+};
- dev_dbg(&icd->dev, "Video %x removed: %p, %p\n", mt9t031->client->addr,
- icd->dev.parent, icd->vdev);
- soc_camera_video_stop(icd);
-}
+static struct v4l2_subdev_video_ops mt9t031_subdev_video_ops = {
+ .s_stream = mt9t031_s_stream,
+ .s_fmt = mt9t031_s_fmt,
+ .g_fmt = mt9t031_g_fmt,
+ .try_fmt = mt9t031_try_fmt,
+ .s_crop = mt9t031_s_crop,
+ .g_crop = mt9t031_g_crop,
+ .cropcap = mt9t031_cropcap,
+};
+
+static struct v4l2_subdev_ops mt9t031_subdev_ops = {
+ .core = &mt9t031_subdev_core_ops,
+ .video = &mt9t031_subdev_video_ops,
+};
static int mt9t031_probe(struct i2c_client *client,
const struct i2c_device_id *did)
{
struct mt9t031 *mt9t031;
- struct soc_camera_device *icd;
+ struct soc_camera_device *icd = client->dev.platform_data;
struct i2c_adapter *adapter = to_i2c_adapter(client->dev.parent);
- struct soc_camera_link *icl = client->dev.platform_data;
+ struct soc_camera_link *icl;
int ret;
+ if (!icd) {
+ dev_err(&client->dev, "MT9T031: missing soc-camera data!\n");
+ return -EINVAL;
+ }
+
+ icl = to_soc_camera_link(icd);
if (!icl) {
dev_err(&client->dev, "MT9T031 driver needs platform data\n");
return -EINVAL;
if (!mt9t031)
return -ENOMEM;
- mt9t031->client = client;
- i2c_set_clientdata(client, mt9t031);
+ v4l2_i2c_subdev_init(&mt9t031->subdev, client, &mt9t031_subdev_ops);
/* Second stage probe - when a capture adapter is there */
- icd = &mt9t031->icd;
- icd->ops = &mt9t031_ops;
- icd->control = &client->dev;
- icd->x_min = MT9T031_COLUMN_SKIP;
- icd->y_min = MT9T031_ROW_SKIP;
- icd->x_current = icd->x_min;
- icd->y_current = icd->y_min;
- icd->width_min = MT9T031_MIN_WIDTH;
- icd->width_max = MT9T031_MAX_WIDTH;
- icd->height_min = MT9T031_MIN_HEIGHT;
- icd->height_max = MT9T031_MAX_HEIGHT;
- icd->y_skip_top = 0;
- icd->iface = icl->bus_id;
+ icd->ops = &mt9t031_ops;
+ icd->y_skip_top = 0;
+
+ mt9t031->rect.left = MT9T031_COLUMN_SKIP;
+ mt9t031->rect.top = MT9T031_ROW_SKIP;
+ mt9t031->rect.width = MT9T031_MAX_WIDTH;
+ mt9t031->rect.height = MT9T031_MAX_HEIGHT;
+
/* Simulated autoexposure. If enabled, we calculate shutter width
* ourselves in the driver based on vertical blanking and frame width */
mt9t031->autoexposure = 1;
mt9t031->xskip = 1;
mt9t031->yskip = 1;
- ret = soc_camera_device_register(icd);
- if (ret)
- goto eisdr;
+ mt9t031_idle(client);
- return 0;
+ ret = mt9t031_video_probe(client);
+
+ mt9t031_disable(client);
+
+ if (ret) {
+ icd->ops = NULL;
+ i2c_set_clientdata(client, NULL);
+ kfree(mt9t031);
+ }
-eisdr:
- i2c_set_clientdata(client, NULL);
- kfree(mt9t031);
return ret;
}
static int mt9t031_remove(struct i2c_client *client)
{
- struct mt9t031 *mt9t031 = i2c_get_clientdata(client);
+ struct mt9t031 *mt9t031 = to_mt9t031(client);
+ struct soc_camera_device *icd = client->dev.platform_data;
- soc_camera_device_unregister(&mt9t031->icd);
+ icd->ops = NULL;
i2c_set_clientdata(client, NULL);
+ client->driver = NULL;
kfree(mt9t031);
return 0;
projects / mv-sheeva.git / blobdiff