diff options
Diffstat (limited to 'kernel/Documentation/DocBook/media/v4l/vidioc-queryctrl.xml')
| -rw-r--r-- | kernel/Documentation/DocBook/media/v4l/vidioc-queryctrl.xml | 23 |
1 files changed, 17 insertions, 6 deletions
diff --git a/kernel/Documentation/DocBook/media/v4l/vidioc-queryctrl.xml b/kernel/Documentation/DocBook/media/v4l/vidioc-queryctrl.xml index dc83ad70f..55b7582cf 100644 --- a/kernel/Documentation/DocBook/media/v4l/vidioc-queryctrl.xml +++ b/kernel/Documentation/DocBook/media/v4l/vidioc-queryctrl.xml @@ -101,8 +101,9 @@ prematurely end the enumeration).</para></footnote></para> next supported non-compound control, or <errorcode>EINVAL</errorcode> if there is none. In addition, the <constant>V4L2_CTRL_FLAG_NEXT_COMPOUND</constant> flag can be specified to enumerate all compound controls (i.e. controls -with type ≥ <constant>V4L2_CTRL_COMPOUND_TYPES</constant>). Specify both -<constant>V4L2_CTRL_FLAG_NEXT_CTRL</constant> and +with type ≥ <constant>V4L2_CTRL_COMPOUND_TYPES</constant> and/or array +control, in other words controls that contain more than one value). +Specify both <constant>V4L2_CTRL_FLAG_NEXT_CTRL</constant> and <constant>V4L2_CTRL_FLAG_NEXT_COMPOUND</constant> in order to enumerate all controls, compound or not. Drivers which do not support these flags yet always return <errorcode>EINVAL</errorcode>.</para> @@ -422,7 +423,7 @@ the array to zero.</entry> <entry>any</entry> <entry>An integer-valued control ranging from minimum to maximum inclusive. The step value indicates the increment between -values which are actually different on the hardware.</entry> +values.</entry> </row> <row> <entry><constant>V4L2_CTRL_TYPE_BOOLEAN</constant></entry> @@ -518,7 +519,7 @@ Older drivers which do not support this feature return an <entry>any</entry> <entry>An unsigned 8-bit valued control ranging from minimum to maximum inclusive. The step value indicates the increment between -values which are actually different on the hardware. +values. </entry> </row> <row> @@ -528,7 +529,17 @@ values which are actually different on the hardware. <entry>any</entry> <entry>An unsigned 16-bit valued control ranging from minimum to maximum inclusive. The step value indicates the increment between -values which are actually different on the hardware. +values. +</entry> + </row> + <row> + <entry><constant>V4L2_CTRL_TYPE_U32</constant></entry> + <entry>any</entry> + <entry>any</entry> + <entry>any</entry> + <entry>An unsigned 32-bit valued control ranging from minimum to +maximum inclusive. The step value indicates the increment between +values. </entry> </row> </tbody> @@ -616,7 +627,7 @@ pointer to memory containing the payload of the control.</entry> <entry><constant>V4L2_CTRL_FLAG_EXECUTE_ON_WRITE</constant></entry> <entry>0x0200</entry> <entry>The value provided to the control will be propagated to the driver -even if remains constant. This is required when the control represents an action +even if it remains constant. This is required when the control represents an action on the hardware. For example: clearing an error flag or triggering the flash. All the controls of the type <constant>V4L2_CTRL_TYPE_BUTTON</constant> have this flag set.</entry> </row> |