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V4L/DVB (11387): Sensor orientation reporting

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Add support to the SQ-905 driver to pass back to user space the
sensor orientation information obtained from the camera during init.
Modifies gspca and the videodev2.h header to create the necessary
API.

[mchehab@redhat.com: Changed "Output is" to "Frames are" at the comments, as suggested at LMML]
Signed-off-by: Adam Baker <linux@baker-net.org.uk>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Adam Baker 2009-03-29 19:17:10 -03:00 committed by Mauro Carvalho Chehab
parent 2659e468a3
commit dfa76fa282
4 changed files with 13 additions and 0 deletions
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1
drivers/media/video/gspca/gspca.c
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@ -1132,6 +1132,7 @@ static int vidioc_enum_input(struct file *file, void *priv,
if (input->index != 0)
return -EINVAL;
input->type = V4L2_INPUT_TYPE_CAMERA;
input->status = gspca_dev->cam.input_flags;
strncpy(input->name, gspca_dev->sd_desc->name,
sizeof input->name);
return 0;

1
drivers/media/video/gspca/gspca.h
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@ -56,6 +56,7 @@ struct cam {
* - cannot be > MAX_NURBS
* - when 0 and bulk_size != 0 means
* 1 URB and submit done by subdriver */
u32 input_flags; /* value for ENUM_INPUT status flags */
};
struct gspca_dev;

6
drivers/media/video/gspca/sq905.c
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@ -360,6 +360,12 @@ static int sd_init(struct gspca_dev *gspca_dev)
gspca_dev->cam.nmodes = ARRAY_SIZE(sq905_mode);
if (!(ident & SQ905_HIRES_MASK))
gspca_dev->cam.nmodes--;
if (ident & SQ905_ORIENTATION_MASK)
gspca_dev->cam.input_flags = V4L2_IN_ST_VFLIP;
else
gspca_dev->cam.input_flags = V4L2_IN_ST_VFLIP |
V4L2_IN_ST_HFLIP;
return 0;
}

5
include/linux/videodev2.h
View File

@ -737,6 +737,11 @@ struct v4l2_input {
#define V4L2_IN_ST_NO_SIGNAL 0x00000002
#define V4L2_IN_ST_NO_COLOR 0x00000004
/* field 'status' - sensor orientation */
/* If sensor is mounted upside down set both bits */
#define V4L2_IN_ST_HFLIP 0x00000010 /* Frames are flipped horizontally */
#define V4L2_IN_ST_VFLIP 0x00000020 /* Frames are flipped vertically */
/* field 'status' - analog */
#define V4L2_IN_ST_NO_H_LOCK 0x00000100 /* No horizontal sync lock */
#define V4L2_IN_ST_COLOR_KILL 0x00000200 /* Color killer is active */