#define OV9740_MIPI_CTRL_3012 0x3012
#define OV9740_SC_CMMM_MIPI_CTR 0x3014
-/* supported resolutions */
-enum {
- OV9740_VGA,
- OV9740_720P,
-};
-
-struct ov9740_resolution {
- unsigned int width;
- unsigned int height;
-};
-
-static struct ov9740_resolution ov9740_resolutions[] = {
- [OV9740_VGA] = {
- .width = 640,
- .height = 480,
- },
- [OV9740_720P] = {
- .width = 1280,
- .height = 720,
- },
-};
+#define OV9740_MAX_WIDTH 1280
+#define OV9740_MAX_HEIGHT 720
/* Misc. structures */
struct ov9740_reg {
bool flag_vflip;
bool flag_hflip;
+
+ /* For suspend/resume. */
+ struct v4l2_mbus_framefmt current_mf;
+ bool current_enable;
};
static const struct ov9740_reg ov9740_defaults[] = {
{ OV9740_ISP_CTRL19, 0x02 },
};
-static const struct ov9740_reg ov9740_regs_vga[] = {
- { OV9740_X_ADDR_START_HI, 0x00 },
- { OV9740_X_ADDR_START_LO, 0xa0 },
- { OV9740_Y_ADDR_START_HI, 0x00 },
- { OV9740_Y_ADDR_START_LO, 0x00 },
- { OV9740_X_ADDR_END_HI, 0x04 },
- { OV9740_X_ADDR_END_LO, 0x63 },
- { OV9740_Y_ADDR_END_HI, 0x02 },
- { OV9740_Y_ADDR_END_LO, 0xd3 },
- { OV9740_X_OUTPUT_SIZE_HI, 0x02 },
- { OV9740_X_OUTPUT_SIZE_LO, 0x80 },
- { OV9740_Y_OUTPUT_SIZE_HI, 0x01 },
- { OV9740_Y_OUTPUT_SIZE_LO, 0xe0 },
- { OV9740_ISP_CTRL1E, 0x03 },
- { OV9740_ISP_CTRL1F, 0xc0 },
- { OV9740_ISP_CTRL20, 0x02 },
- { OV9740_ISP_CTRL21, 0xd0 },
- { OV9740_VFIFO_READ_START_HI, 0x01 },
- { OV9740_VFIFO_READ_START_LO, 0x40 },
- { OV9740_ISP_CTRL00, 0xff },
- { OV9740_ISP_CTRL01, 0xff },
- { OV9740_ISP_CTRL03, 0xff },
-};
-
-static const struct ov9740_reg ov9740_regs_720p[] = {
- { OV9740_X_ADDR_START_HI, 0x00 },
- { OV9740_X_ADDR_START_LO, 0x00 },
- { OV9740_Y_ADDR_START_HI, 0x00 },
- { OV9740_Y_ADDR_START_LO, 0x00 },
- { OV9740_X_ADDR_END_HI, 0x05 },
- { OV9740_X_ADDR_END_LO, 0x03 },
- { OV9740_Y_ADDR_END_HI, 0x02 },
- { OV9740_Y_ADDR_END_LO, 0xd3 },
- { OV9740_X_OUTPUT_SIZE_HI, 0x05 },
- { OV9740_X_OUTPUT_SIZE_LO, 0x00 },
- { OV9740_Y_OUTPUT_SIZE_HI, 0x02 },
- { OV9740_Y_OUTPUT_SIZE_LO, 0xd0 },
- { OV9740_ISP_CTRL1E, 0x05 },
- { OV9740_ISP_CTRL1F, 0x00 },
- { OV9740_ISP_CTRL20, 0x02 },
- { OV9740_ISP_CTRL21, 0xd0 },
- { OV9740_VFIFO_READ_START_HI, 0x02 },
- { OV9740_VFIFO_READ_START_LO, 0x30 },
- { OV9740_ISP_CTRL00, 0xff },
- { OV9740_ISP_CTRL01, 0xef },
- { OV9740_ISP_CTRL03, 0xff },
-};
-
static enum v4l2_mbus_pixelcode ov9740_codes[] = {
V4L2_MBUS_FMT_YUYV8_2X8,
};
0x00);
}
+ priv->current_enable = enable;
+
return ret;
}
return soc_camera_apply_sensor_flags(icl, flags);
}
-/* Get status of additional camera capabilities */
-static int ov9740_g_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl)
-{
- struct ov9740_priv *priv = to_ov9740(sd);
-
- switch (ctrl->id) {
- case V4L2_CID_VFLIP:
- ctrl->value = priv->flag_vflip;
- break;
- case V4L2_CID_HFLIP:
- ctrl->value = priv->flag_hflip;
- break;
- default:
- return -EINVAL;
- }
-
- return 0;
-}
-
-/* Set status of additional camera capabilities */
-static int ov9740_s_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl)
-{
- struct ov9740_priv *priv = to_ov9740(sd);
-
- switch (ctrl->id) {
- case V4L2_CID_VFLIP:
- priv->flag_vflip = ctrl->value;
- break;
- case V4L2_CID_HFLIP:
- priv->flag_hflip = ctrl->value;
- break;
- default:
- return -EINVAL;
- }
-
- return 0;
-}
-
-/* Get chip identification */
-static int ov9740_g_chip_ident(struct v4l2_subdev *sd,
- struct v4l2_dbg_chip_ident *id)
+/* select nearest higher resolution for capture */
+static void ov9740_res_roundup(u32 *width, u32 *height)
{
- struct ov9740_priv *priv = to_ov9740(sd);
+ /* Width must be a multiple of 4 pixels. */
+ *width = ALIGN(*width, 4);
- id->ident = priv->ident;
- id->revision = priv->revision;
+ /* Max resolution is 1280x720 (720p). */
+ if (*width > OV9740_MAX_WIDTH)
+ *width = OV9740_MAX_WIDTH;
- return 0;
+ if (*height > OV9740_MAX_HEIGHT)
+ *height = OV9740_MAX_HEIGHT;
}
-#ifdef CONFIG_VIDEO_ADV_DEBUG
-static int ov9740_get_register(struct v4l2_subdev *sd,
- struct v4l2_dbg_register *reg)
+/* Setup registers according to resolution and color encoding */
+static int ov9740_set_res(struct i2c_client *client, u32 width, u32 height)
{
- struct i2c_client *client = v4l2_get_subdevdata(sd);
+ u32 x_start;
+ u32 y_start;
+ u32 x_end;
+ u32 y_end;
+ bool scaling = 0;
+ u32 scale_input_x;
+ u32 scale_input_y;
int ret;
- u8 val;
-
- if (reg->reg & ~0xffff)
- return -EINVAL;
-
- reg->size = 2;
-
- ret = ov9740_reg_read(client, reg->reg, &val);
- if (ret)
- return ret;
-
- reg->val = (__u64)val;
- return ret;
-}
+ if ((width != OV9740_MAX_WIDTH) || (height != OV9740_MAX_HEIGHT))
+ scaling = 1;
-static int ov9740_set_register(struct v4l2_subdev *sd,
- struct v4l2_dbg_register *reg)
-{
- struct i2c_client *client = v4l2_get_subdevdata(sd);
+ /*
+ * Try to use as much of the sensor area as possible when supporting
+ * smaller resolutions. Depending on the aspect ratio of the
+ * chosen resolution, we can either use the full width of the sensor,
+ * or the full height of the sensor (or both if the aspect ratio is
+ * the same as 1280x720.
+ */
+ if ((OV9740_MAX_WIDTH * height) > (OV9740_MAX_HEIGHT * width)) {
+ scale_input_x = (OV9740_MAX_HEIGHT * width) / height;
+ scale_input_y = OV9740_MAX_HEIGHT;
+ } else {
+ scale_input_x = OV9740_MAX_WIDTH;
+ scale_input_y = (OV9740_MAX_WIDTH * height) / width;
+ }
- if (reg->reg & ~0xffff || reg->val & ~0xff)
- return -EINVAL;
+ /* These describe the area of the sensor to use. */
+ x_start = (OV9740_MAX_WIDTH - scale_input_x) / 2;
+ y_start = (OV9740_MAX_HEIGHT - scale_input_y) / 2;
+ x_end = x_start + scale_input_x - 1;
+ y_end = y_start + scale_input_y - 1;
- return ov9740_reg_write(client, reg->reg, reg->val);
-}
-#endif
+ ret = ov9740_reg_write(client, OV9740_X_ADDR_START_HI, x_start >> 8);
+ if (ret)
+ goto done;
+ ret = ov9740_reg_write(client, OV9740_X_ADDR_START_LO, x_start & 0xff);
+ if (ret)
+ goto done;
+ ret = ov9740_reg_write(client, OV9740_Y_ADDR_START_HI, y_start >> 8);
+ if (ret)
+ goto done;
+ ret = ov9740_reg_write(client, OV9740_Y_ADDR_START_LO, y_start & 0xff);
+ if (ret)
+ goto done;
-/* select nearest higher resolution for capture */
-static void ov9740_res_roundup(u32 *width, u32 *height)
-{
- int i;
+ ret = ov9740_reg_write(client, OV9740_X_ADDR_END_HI, x_end >> 8);
+ if (ret)
+ goto done;
+ ret = ov9740_reg_write(client, OV9740_X_ADDR_END_LO, x_end & 0xff);
+ if (ret)
+ goto done;
+ ret = ov9740_reg_write(client, OV9740_Y_ADDR_END_HI, y_end >> 8);
+ if (ret)
+ goto done;
+ ret = ov9740_reg_write(client, OV9740_Y_ADDR_END_LO, y_end & 0xff);
+ if (ret)
+ goto done;
- for (i = 0; i < ARRAY_SIZE(ov9740_resolutions); i++)
- if ((ov9740_resolutions[i].width >= *width) &&
- (ov9740_resolutions[i].height >= *height)) {
- *width = ov9740_resolutions[i].width;
- *height = ov9740_resolutions[i].height;
- return;
- }
+ ret = ov9740_reg_write(client, OV9740_X_OUTPUT_SIZE_HI, width >> 8);
+ if (ret)
+ goto done;
+ ret = ov9740_reg_write(client, OV9740_X_OUTPUT_SIZE_LO, width & 0xff);
+ if (ret)
+ goto done;
+ ret = ov9740_reg_write(client, OV9740_Y_OUTPUT_SIZE_HI, height >> 8);
+ if (ret)
+ goto done;
+ ret = ov9740_reg_write(client, OV9740_Y_OUTPUT_SIZE_LO, height & 0xff);
+ if (ret)
+ goto done;
- *width = ov9740_resolutions[OV9740_720P].width;
- *height = ov9740_resolutions[OV9740_720P].height;
-}
+ ret = ov9740_reg_write(client, OV9740_ISP_CTRL1E, scale_input_x >> 8);
+ if (ret)
+ goto done;
+ ret = ov9740_reg_write(client, OV9740_ISP_CTRL1F, scale_input_x & 0xff);
+ if (ret)
+ goto done;
+ ret = ov9740_reg_write(client, OV9740_ISP_CTRL20, scale_input_y >> 8);
+ if (ret)
+ goto done;
+ ret = ov9740_reg_write(client, OV9740_ISP_CTRL21, scale_input_y & 0xff);
+ if (ret)
+ goto done;
-/* Setup registers according to resolution and color encoding */
-static int ov9740_set_res(struct i2c_client *client, u32 width)
-{
- int ret;
+ ret = ov9740_reg_write(client, OV9740_VFIFO_READ_START_HI,
+ (scale_input_x - width) >> 8);
+ if (ret)
+ goto done;
+ ret = ov9740_reg_write(client, OV9740_VFIFO_READ_START_LO,
+ (scale_input_x - width) & 0xff);
+ if (ret)
+ goto done;
- /* select register configuration for given resolution */
- if (width == ov9740_resolutions[OV9740_VGA].width) {
- dev_dbg(&client->dev, "Setting image size to 640x480\n");
- ret = ov9740_reg_write_array(client, ov9740_regs_vga,
- ARRAY_SIZE(ov9740_regs_vga));
- } else if (width == ov9740_resolutions[OV9740_720P].width) {
- dev_dbg(&client->dev, "Setting image size to 1280x720\n");
- ret = ov9740_reg_write_array(client, ov9740_regs_720p,
- ARRAY_SIZE(ov9740_regs_720p));
- } else {
- dev_err(&client->dev, "Failed to select resolution!\n");
- return -EINVAL;
- }
+ ret = ov9740_reg_write(client, OV9740_ISP_CTRL00, 0xff);
+ if (ret)
+ goto done;
+ ret = ov9740_reg_write(client, OV9740_ISP_CTRL01, 0xef |
+ (scaling << 4));
+ if (ret)
+ goto done;
+ ret = ov9740_reg_write(client, OV9740_ISP_CTRL03, 0xff);
+done:
return ret;
}
struct v4l2_mbus_framefmt *mf)
{
struct i2c_client *client = v4l2_get_subdevdata(sd);
+ struct ov9740_priv *priv = to_ov9740(sd);
enum v4l2_colorspace cspace;
enum v4l2_mbus_pixelcode code = mf->code;
int ret;
if (ret < 0)
return ret;
- ret = ov9740_set_res(client, mf->width);
+ ret = ov9740_set_res(client, mf->width, mf->height);
if (ret < 0)
return ret;
mf->code = code;
mf->colorspace = cspace;
+ memcpy(&priv->current_mf, mf, sizeof(struct v4l2_mbus_framefmt));
+
return ret;
}
{
a->bounds.left = 0;
a->bounds.top = 0;
- a->bounds.width = ov9740_resolutions[OV9740_720P].width;
- a->bounds.height = ov9740_resolutions[OV9740_720P].height;
+ a->bounds.width = OV9740_MAX_WIDTH;
+ a->bounds.height = OV9740_MAX_HEIGHT;
a->defrect = a->bounds;
a->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
a->pixelaspect.numerator = 1;
{
a->c.left = 0;
a->c.top = 0;
- a->c.width = ov9740_resolutions[OV9740_720P].width;
- a->c.height = ov9740_resolutions[OV9740_720P].height;
+ a->c.width = OV9740_MAX_WIDTH;
+ a->c.height = OV9740_MAX_HEIGHT;
a->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
return 0;
}
+/* Get status of additional camera capabilities */
+static int ov9740_g_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl)
+{
+ struct ov9740_priv *priv = to_ov9740(sd);
+
+ switch (ctrl->id) {
+ case V4L2_CID_VFLIP:
+ ctrl->value = priv->flag_vflip;
+ break;
+ case V4L2_CID_HFLIP:
+ ctrl->value = priv->flag_hflip;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+/* Set status of additional camera capabilities */
+static int ov9740_s_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl)
+{
+ struct ov9740_priv *priv = to_ov9740(sd);
+
+ switch (ctrl->id) {
+ case V4L2_CID_VFLIP:
+ priv->flag_vflip = ctrl->value;
+ break;
+ case V4L2_CID_HFLIP:
+ priv->flag_hflip = ctrl->value;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+/* Get chip identification */
+static int ov9740_g_chip_ident(struct v4l2_subdev *sd,
+ struct v4l2_dbg_chip_ident *id)
+{
+ struct ov9740_priv *priv = to_ov9740(sd);
+
+ id->ident = priv->ident;
+ id->revision = priv->revision;
+
+ return 0;
+}
+
+static int ov9740_s_power(struct v4l2_subdev *sd, int on)
+{
+ struct ov9740_priv *priv = to_ov9740(sd);
+
+ if (!priv->current_enable)
+ return 0;
+
+ if (on) {
+ ov9740_s_fmt(sd, &priv->current_mf);
+ ov9740_s_stream(sd, priv->current_enable);
+ } else {
+ ov9740_s_stream(sd, 0);
+ priv->current_enable = true;
+ }
+
+ return 0;
+}
+
+#ifdef CONFIG_VIDEO_ADV_DEBUG
+static int ov9740_get_register(struct v4l2_subdev *sd,
+ struct v4l2_dbg_register *reg)
+{
+ struct i2c_client *client = v4l2_get_subdevdata(sd);
+ int ret;
+ u8 val;
+
+ if (reg->reg & ~0xffff)
+ return -EINVAL;
+
+ reg->size = 2;
+
+ ret = ov9740_reg_read(client, reg->reg, &val);
+ if (ret)
+ return ret;
+
+ reg->val = (__u64)val;
+
+ return ret;
+}
+
+static int ov9740_set_register(struct v4l2_subdev *sd,
+ struct v4l2_dbg_register *reg)
+{
+ struct i2c_client *client = v4l2_get_subdevdata(sd);
+
+ if (reg->reg & ~0xffff || reg->val & ~0xff)
+ return -EINVAL;
+
+ return ov9740_reg_write(client, reg->reg, reg->val);
+}
+#endif
+
static int ov9740_video_probe(struct soc_camera_device *icd,
struct i2c_client *client)
{
u8 modelhi, modello;
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) {
- dev_err(&client->dev, "Parent missing or invalid!\n");
- ret = -ENODEV;
- goto err;
- }
+ /* We must have a parent by now. And it cannot be a wrong one. */
+ BUG_ON(!icd->parent ||
+ to_soc_camera_host(icd->parent)->nr != icd->iface);
/*
* check and show product ID and manufacturer ID
.num_controls = ARRAY_SIZE(ov9740_controls),
};
+static struct v4l2_subdev_video_ops ov9740_video_ops = {
+ .s_stream = ov9740_s_stream,
+ .s_mbus_fmt = ov9740_s_fmt,
+ .try_mbus_fmt = ov9740_try_fmt,
+ .enum_mbus_fmt = ov9740_enum_fmt,
+ .cropcap = ov9740_cropcap,
+ .g_crop = ov9740_g_crop,
+};
+
static struct v4l2_subdev_core_ops ov9740_core_ops = {
.g_ctrl = ov9740_g_ctrl,
.s_ctrl = ov9740_s_ctrl,
.g_chip_ident = ov9740_g_chip_ident,
+ .s_power = ov9740_s_power,
#ifdef CONFIG_VIDEO_ADV_DEBUG
.g_register = ov9740_get_register,
.s_register = ov9740_set_register,
#endif
};
-static struct v4l2_subdev_video_ops ov9740_video_ops = {
- .s_stream = ov9740_s_stream,
- .s_mbus_fmt = ov9740_s_fmt,
- .try_mbus_fmt = ov9740_try_fmt,
- .enum_mbus_fmt = ov9740_enum_fmt,
- .cropcap = ov9740_cropcap,
- .g_crop = ov9740_g_crop,
-};
-
static struct v4l2_subdev_ops ov9740_subdev_ops = {
.core = &ov9740_core_ops,
.video = &ov9740_video_ops,
git.openpandora.org / pandora-kernel.git / blobdiff