* published by the Free Software Foundation.
*/
-#include <linux/videodev2.h>
-#include <linux/slab.h>
+#include <linux/device.h>
#include <linux/i2c.h>
#include <linux/log2.h>
+#include <linux/pm.h>
+#include <linux/slab.h>
+#include <linux/videodev2.h>
-#include <media/v4l2-subdev.h>
-#include <media/v4l2-chip-ident.h>
#include <media/soc_camera.h>
+#include <media/v4l2-chip-ident.h>
+#include <media/v4l2-subdev.h>
-/* mt9t031 i2c address 0x5d
+/*
+ * mt9t031 i2c address 0x5d
* The platform has to define i2c_board_info and link to it from
- * struct soc_camera_link */
+ * struct soc_camera_link
+ */
/* mt9t031 selected register addresses */
#define MT9T031_CHIP_VERSION 0x00
SOCAM_VSYNC_ACTIVE_HIGH | SOCAM_DATA_ACTIVE_HIGH | \
SOCAM_MASTER | SOCAM_DATAWIDTH_10)
-static const struct soc_camera_data_format mt9t031_colour_formats[] = {
- {
- .name = "Bayer (sRGB) 10 bit",
- .depth = 10,
- .fourcc = V4L2_PIX_FMT_SGRBG10,
- .colorspace = V4L2_COLORSPACE_SRGB,
- }
-};
-
struct mt9t031 {
struct v4l2_subdev subdev;
struct v4l2_rect rect; /* Sensor window */
int model; /* V4L2_IDENT_MT9T031* codes from v4l2-chip-ident.h */
u16 xskip;
u16 yskip;
+ unsigned int gain;
+ unsigned short y_skip_top; /* Lines to skip at the top */
+ unsigned int exposure;
unsigned char autoexposure;
};
return 0;
}
-static int mt9t031_init(struct soc_camera_device *icd)
-{
- struct i2c_client *client = to_i2c_client(to_soc_camera_control(icd));
-
- return mt9t031_idle(client);
-}
-
-static int mt9t031_release(struct soc_camera_device *icd)
-{
- struct i2c_client *client = to_i2c_client(to_soc_camera_control(icd));
-
- return mt9t031_disable(client);
-}
-
static int mt9t031_s_stream(struct v4l2_subdev *sd, int enable)
{
struct i2c_client *client = sd->priv;
return soc_camera_apply_sensor_flags(icl, MT9T031_BUS_PARAM);
}
+enum {
+ MT9T031_CTRL_VFLIP,
+ MT9T031_CTRL_HFLIP,
+ MT9T031_CTRL_GAIN,
+ MT9T031_CTRL_EXPOSURE,
+ MT9T031_CTRL_EXPOSURE_AUTO,
+};
+
+static const struct v4l2_queryctrl mt9t031_controls[] = {
+ [MT9T031_CTRL_VFLIP] = {
+ .id = V4L2_CID_VFLIP,
+ .type = V4L2_CTRL_TYPE_BOOLEAN,
+ .name = "Flip Vertically",
+ .minimum = 0,
+ .maximum = 1,
+ .step = 1,
+ .default_value = 0,
+ },
+ [MT9T031_CTRL_HFLIP] = {
+ .id = V4L2_CID_HFLIP,
+ .type = V4L2_CTRL_TYPE_BOOLEAN,
+ .name = "Flip Horizontally",
+ .minimum = 0,
+ .maximum = 1,
+ .step = 1,
+ .default_value = 0,
+ },
+ [MT9T031_CTRL_GAIN] = {
+ .id = V4L2_CID_GAIN,
+ .type = V4L2_CTRL_TYPE_INTEGER,
+ .name = "Gain",
+ .minimum = 0,
+ .maximum = 127,
+ .step = 1,
+ .default_value = 64,
+ .flags = V4L2_CTRL_FLAG_SLIDER,
+ },
+ [MT9T031_CTRL_EXPOSURE] = {
+ .id = V4L2_CID_EXPOSURE,
+ .type = V4L2_CTRL_TYPE_INTEGER,
+ .name = "Exposure",
+ .minimum = 1,
+ .maximum = 255,
+ .step = 1,
+ .default_value = 255,
+ .flags = V4L2_CTRL_FLAG_SLIDER,
+ },
+ [MT9T031_CTRL_EXPOSURE_AUTO] = {
+ .id = V4L2_CID_EXPOSURE_AUTO,
+ .type = V4L2_CTRL_TYPE_BOOLEAN,
+ .name = "Automatic Exposure",
+ .minimum = 0,
+ .maximum = 1,
+ .step = 1,
+ .default_value = 1,
+ }
+};
+
+static struct soc_camera_ops mt9t031_ops = {
+ .set_bus_param = mt9t031_set_bus_param,
+ .query_bus_param = mt9t031_query_bus_param,
+ .controls = mt9t031_controls,
+ .num_controls = ARRAY_SIZE(mt9t031_controls),
+};
+
/* target must be _even_ */
static u16 mt9t031_skip(s32 *source, s32 target, s32 max)
{
}
/* rect is the sensor rectangle, the caller guarantees parameter validity */
-static int mt9t031_set_params(struct soc_camera_device *icd,
+static int mt9t031_set_params(struct i2c_client *client,
struct v4l2_rect *rect, u16 xskip, u16 yskip)
{
- struct i2c_client *client = to_i2c_client(to_soc_camera_control(icd));
struct mt9t031 *mt9t031 = to_mt9t031(client);
int ret;
u16 xbin, ybin;
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() */
+ /*
+ * 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, rect->left);
if (ret >= 0)
ret = reg_write(client, MT9T031_WINDOW_WIDTH, rect->width - 1);
if (ret >= 0)
ret = reg_write(client, MT9T031_WINDOW_HEIGHT,
- rect->height + icd->y_skip_top - 1);
+ rect->height + mt9t031->y_skip_top - 1);
if (ret >= 0 && mt9t031->autoexposure) {
- ret = set_shutter(client,
- rect->height + icd->y_skip_top + vblank);
+ unsigned int total_h = rect->height + mt9t031->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 + (rect->height +
- icd->y_skip_top + vblank - 1) *
- (qctrl->maximum - qctrl->minimum)) /
+ &mt9t031_controls[MT9T031_CTRL_EXPOSURE];
+ mt9t031->exposure = (shutter_max / 2 + (total_h - 1) *
+ (qctrl->maximum - qctrl->minimum)) /
shutter_max + qctrl->minimum;
}
}
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.top, &rect.height,
MT9T031_ROW_SKIP, MT9T031_MIN_HEIGHT, MT9T031_MAX_HEIGHT);
- return mt9t031_set_params(icd, &rect, mt9t031->xskip, mt9t031->yskip);
+ return mt9t031_set_params(client, &rect, mt9t031->xskip, mt9t031->yskip);
}
static int mt9t031_g_crop(struct v4l2_subdev *sd, struct v4l2_crop *a)
return 0;
}
-static int mt9t031_g_fmt(struct v4l2_subdev *sd, struct v4l2_format *f)
+static int mt9t031_g_fmt(struct v4l2_subdev *sd,
+ struct v4l2_mbus_framefmt *mf)
{
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;
+ mf->width = mt9t031->rect.width / mt9t031->xskip;
+ mf->height = mt9t031->rect.height / mt9t031->yskip;
+ mf->code = V4L2_MBUS_FMT_SBGGR10_1X10;
+ mf->colorspace = V4L2_COLORSPACE_SRGB;
+ mf->field = V4L2_FIELD_NONE;
return 0;
}
-static int mt9t031_s_fmt(struct v4l2_subdev *sd, struct v4l2_format *f)
+static int mt9t031_s_fmt(struct v4l2_subdev *sd,
+ struct v4l2_mbus_framefmt *mf)
{
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);
+ xskip = mt9t031_skip(&rect.width, mf->width, MT9T031_MAX_WIDTH);
+ yskip = mt9t031_skip(&rect.height, mf->height, MT9T031_MAX_HEIGHT);
+
+ mf->code = V4L2_MBUS_FMT_SBGGR10_1X10;
+ mf->colorspace = V4L2_COLORSPACE_SRGB;
/* mt9t031_set_params() doesn't change width and height */
- return mt9t031_set_params(icd, &rect, xskip, yskip);
+ return mt9t031_set_params(client, &rect, xskip, yskip);
}
/*
* 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)
+static int mt9t031_try_fmt(struct v4l2_subdev *sd,
+ struct v4l2_mbus_framefmt *mf)
{
- struct v4l2_pix_format *pix = &f->fmt.pix;
-
v4l_bound_align_image(
- &pix->width, MT9T031_MIN_WIDTH, MT9T031_MAX_WIDTH, 1,
- &pix->height, MT9T031_MIN_HEIGHT, MT9T031_MAX_HEIGHT, 1, 0);
+ &mf->width, MT9T031_MIN_WIDTH, MT9T031_MAX_WIDTH, 1,
+ &mf->height, MT9T031_MIN_HEIGHT, MT9T031_MAX_HEIGHT, 1, 0);
+
+ mf->code = V4L2_MBUS_FMT_SBGGR10_1X10;
+ mf->colorspace = V4L2_COLORSPACE_SRGB;
return 0;
}
}
#endif
-static const struct v4l2_queryctrl mt9t031_controls[] = {
- {
- .id = V4L2_CID_VFLIP,
- .type = V4L2_CTRL_TYPE_BOOLEAN,
- .name = "Flip Vertically",
- .minimum = 0,
- .maximum = 1,
- .step = 1,
- .default_value = 0,
- }, {
- .id = V4L2_CID_HFLIP,
- .type = V4L2_CTRL_TYPE_BOOLEAN,
- .name = "Flip Horizontally",
- .minimum = 0,
- .maximum = 1,
- .step = 1,
- .default_value = 0,
- }, {
- .id = V4L2_CID_GAIN,
- .type = V4L2_CTRL_TYPE_INTEGER,
- .name = "Gain",
- .minimum = 0,
- .maximum = 127,
- .step = 1,
- .default_value = 64,
- .flags = V4L2_CTRL_FLAG_SLIDER,
- }, {
- .id = V4L2_CID_EXPOSURE,
- .type = V4L2_CTRL_TYPE_INTEGER,
- .name = "Exposure",
- .minimum = 1,
- .maximum = 255,
- .step = 1,
- .default_value = 255,
- .flags = V4L2_CTRL_FLAG_SLIDER,
- }, {
- .id = V4L2_CID_EXPOSURE_AUTO,
- .type = V4L2_CTRL_TYPE_BOOLEAN,
- .name = "Automatic Exposure",
- .minimum = 0,
- .maximum = 1,
- .step = 1,
- .default_value = 1,
- }
-};
-
-static struct soc_camera_ops mt9t031_ops = {
- .init = mt9t031_init,
- .release = mt9t031_release,
- .set_bus_param = mt9t031_set_bus_param,
- .query_bus_param = mt9t031_query_bus_param,
- .controls = mt9t031_controls,
- .num_controls = ARRAY_SIZE(mt9t031_controls),
-};
-
static int mt9t031_g_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl)
{
struct i2c_client *client = sd->priv;
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;
}
{
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;
- qctrl = soc_camera_find_qctrl(&mt9t031_ops, ctrl->id);
-
- if (!qctrl)
- return -EINVAL;
-
switch (ctrl->id) {
case V4L2_CID_VFLIP:
if (ctrl->value)
return -EIO;
break;
case V4L2_CID_GAIN:
+ qctrl = &mt9t031_controls[MT9T031_CTRL_GAIN];
if (ctrl->value > qctrl->maximum || ctrl->value < qctrl->minimum)
return -EINVAL;
/* See Datasheet Table 7, Gain settings. */
}
/* Success */
- icd->gain = ctrl->value;
+ mt9t031->gain = ctrl->value;
break;
case V4L2_CID_EXPOSURE:
+ qctrl = &mt9t031_controls[MT9T031_CTRL_EXPOSURE];
/* mt9t031 has maximum == default */
if (ctrl->value > qctrl->maximum || ctrl->value < qctrl->minimum)
return -EINVAL;
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, mt9t031->rect.height +
- icd->y_skip_top + vblank) < 0)
+ unsigned int total_h = mt9t031->rect.height +
+ mt9t031->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 +
- (mt9t031->rect.height +
- icd->y_skip_top + vblank - 1) *
- (qctrl->maximum - qctrl->minimum)) /
+ qctrl = &mt9t031_controls[MT9T031_CTRL_EXPOSURE];
+ mt9t031->exposure = (shutter_max / 2 + (total_h - 1) *
+ (qctrl->maximum - qctrl->minimum)) /
shutter_max + qctrl->minimum;
mt9t031->autoexposure = 1;
} else
mt9t031->autoexposure = 0;
break;
+ default:
+ return -EINVAL;
}
return 0;
}
-/* 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 */
+/*
+ * Power Management:
+ * This function does nothing for now but must be present for pm to work
+ */
+static int mt9t031_runtime_suspend(struct device *dev)
+{
+ return 0;
+}
+
+/*
+ * Power Management:
+ * COLUMN_ADDRESS_MODE and ROW_ADDRESS_MODE are not rewritten if unchanged
+ * they are however changed at reset if the platform hook is present
+ * thus we rewrite them with the values stored by the driver
+ */
+static int mt9t031_runtime_resume(struct device *dev)
+{
+ struct video_device *vdev = to_video_device(dev);
+ struct soc_camera_device *icd = container_of(vdev->parent,
+ struct soc_camera_device, dev);
+ struct v4l2_subdev *sd = soc_camera_to_subdev(icd);
+ struct i2c_client *client = sd->priv;
+ struct mt9t031 *mt9t031 = to_mt9t031(client);
+
+ int ret;
+ u16 xbin, ybin;
+
+ xbin = min(mt9t031->xskip, (u16)3);
+ ybin = min(mt9t031->yskip, (u16)3);
+
+ ret = reg_write(client, MT9T031_COLUMN_ADDRESS_MODE,
+ ((xbin - 1) << 4) | (mt9t031->xskip - 1));
+ if (ret < 0)
+ return ret;
+
+ ret = reg_write(client, MT9T031_ROW_ADDRESS_MODE,
+ ((ybin - 1) << 4) | (mt9t031->yskip - 1));
+ if (ret < 0)
+ return ret;
+
+ return 0;
+}
+
+static struct dev_pm_ops mt9t031_dev_pm_ops = {
+ .runtime_suspend = mt9t031_runtime_suspend,
+ .runtime_resume = mt9t031_runtime_resume,
+};
+
+static struct device_type mt9t031_dev_type = {
+ .name = "MT9T031",
+ .pm = &mt9t031_dev_pm_ops,
+};
+
+/*
+ * 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 i2c_client *client)
{
- struct soc_camera_device *icd = client->dev.platform_data;
struct mt9t031 *mt9t031 = to_mt9t031(client);
+ struct video_device *vdev = soc_camera_i2c_to_vdev(client);
s32 data;
+ int ret;
/* Enable the chip */
data = reg_write(client, MT9T031_CHIP_ENABLE, 1);
switch (data) {
case 0x1621:
mt9t031->model = V4L2_IDENT_MT9T031;
- icd->formats = mt9t031_colour_formats;
- icd->num_formats = ARRAY_SIZE(mt9t031_colour_formats);
break;
default:
dev_err(&client->dev,
dev_info(&client->dev, "Detected a MT9T031 chip ID %x\n", data);
+ ret = mt9t031_idle(client);
+ if (ret < 0)
+ dev_err(&client->dev, "Failed to initialise the camera\n");
+ else
+ vdev->dev.type = &mt9t031_dev_type;
+
+ /* mt9t031_idle() has reset the chip to default. */
+ mt9t031->exposure = 255;
+ mt9t031->gain = 64;
+
+ return ret;
+}
+
+static int mt9t031_g_skip_top_lines(struct v4l2_subdev *sd, u32 *lines)
+{
+ struct i2c_client *client = sd->priv;
+ struct mt9t031 *mt9t031 = to_mt9t031(client);
+
+ *lines = mt9t031->y_skip_top;
+
return 0;
}
#endif
};
+static int mt9t031_enum_fmt(struct v4l2_subdev *sd, unsigned int index,
+ enum v4l2_mbus_pixelcode *code)
+{
+ if (index)
+ return -EINVAL;
+
+ *code = V4L2_MBUS_FMT_SBGGR10_1X10;
+ return 0;
+}
+
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_mbus_fmt = mt9t031_s_fmt,
+ .g_mbus_fmt = mt9t031_g_fmt,
+ .try_mbus_fmt = mt9t031_try_fmt,
.s_crop = mt9t031_s_crop,
.g_crop = mt9t031_g_crop,
.cropcap = mt9t031_cropcap,
+ .enum_mbus_fmt = mt9t031_enum_fmt,
+};
+
+static struct v4l2_subdev_sensor_ops mt9t031_subdev_sensor_ops = {
+ .g_skip_top_lines = mt9t031_g_skip_top_lines,
};
static struct v4l2_subdev_ops mt9t031_subdev_ops = {
.core = &mt9t031_subdev_core_ops,
.video = &mt9t031_subdev_video_ops,
+ .sensor = &mt9t031_subdev_sensor_ops,
};
static int mt9t031_probe(struct i2c_client *client,
struct mt9t031 *mt9t031;
struct soc_camera_device *icd = client->dev.platform_data;
struct i2c_adapter *adapter = to_i2c_adapter(client->dev.parent);
- struct soc_camera_link *icl;
int ret;
- if (!icd) {
- dev_err(&client->dev, "MT9T031: missing soc-camera data!\n");
- return -EINVAL;
- }
+ if (icd) {
+ struct soc_camera_link *icl = to_soc_camera_link(icd);
+ if (!icl) {
+ dev_err(&client->dev, "MT9T031 driver needs platform data\n");
+ return -EINVAL;
+ }
- icl = to_soc_camera_link(icd);
- if (!icl) {
- dev_err(&client->dev, "MT9T031 driver needs platform data\n");
- return -EINVAL;
+ icd->ops = &mt9t031_ops;
}
if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_WORD_DATA)) {
v4l2_i2c_subdev_init(&mt9t031->subdev, client, &mt9t031_subdev_ops);
- /* Second stage probe - when a capture adapter is there */
- icd->ops = &mt9t031_ops;
- icd->y_skip_top = 0;
-
+ mt9t031->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 */
+ /*
+ * 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_disable(client);
if (ret) {
- icd->ops = NULL;
- i2c_set_clientdata(client, NULL);
+ if (icd)
+ icd->ops = NULL;
kfree(mt9t031);
}
struct mt9t031 *mt9t031 = to_mt9t031(client);
struct soc_camera_device *icd = client->dev.platform_data;
- icd->ops = NULL;
- i2c_set_clientdata(client, NULL);
+ if (icd)
+ icd->ops = NULL;
client->driver = NULL;
kfree(mt9t031);
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff