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[media] v4l: Add a class and a set of controls for flash devices
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Add a control class and a set of controls to support LED and Xenon flash
devices. An example of such a device is the adp1653.

Signed-off-by: Sakari Ailus <sakari.ailus@iki.fi>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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Sakari Ailus authored and Mauro Carvalho Chehab committed Jul 27, 2011
1 parent aec67f0 commit 0b159ac
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45 changes: 45 additions & 0 deletions drivers/media/video/v4l2-ctrls.c
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Original file line number Diff line number Diff line change
Expand Up @@ -238,6 +238,17 @@ const char * const *v4l2_ctrl_get_menu(u32 id)
"75 useconds",
NULL,
};
static const char * const flash_led_mode[] = {
"Off",
"Flash",
"Torch",
NULL,
};
static const char * const flash_strobe_source[] = {
"Software",
"External",
NULL,
};

switch (id) {
case V4L2_CID_MPEG_AUDIO_SAMPLING_FREQ:
Expand Down Expand Up @@ -278,6 +289,10 @@ const char * const *v4l2_ctrl_get_menu(u32 id)
return colorfx;
case V4L2_CID_TUNE_PREEMPHASIS:
return tune_preemphasis;
case V4L2_CID_FLASH_LED_MODE:
return flash_led_mode;
case V4L2_CID_FLASH_STROBE_SOURCE:
return flash_strobe_source;
default:
return NULL;
}
Expand Down Expand Up @@ -411,6 +426,21 @@ const char *v4l2_ctrl_get_name(u32 id)
case V4L2_CID_TUNE_POWER_LEVEL: return "Tune Power Level";
case V4L2_CID_TUNE_ANTENNA_CAPACITOR: return "Tune Antenna Capacitor";

/* Flash controls */
case V4L2_CID_FLASH_CLASS: return "Flash controls";
case V4L2_CID_FLASH_LED_MODE: return "LED mode";
case V4L2_CID_FLASH_STROBE_SOURCE: return "Strobe source";
case V4L2_CID_FLASH_STROBE: return "Strobe";
case V4L2_CID_FLASH_STROBE_STOP: return "Stop strobe";
case V4L2_CID_FLASH_STROBE_STATUS: return "Strobe status";
case V4L2_CID_FLASH_TIMEOUT: return "Strobe timeout";
case V4L2_CID_FLASH_INTENSITY: return "Intensity, flash mode";
case V4L2_CID_FLASH_TORCH_INTENSITY: return "Intensity, torch mode";
case V4L2_CID_FLASH_INDICATOR_INTENSITY: return "Intensity, indicator";
case V4L2_CID_FLASH_FAULT: return "Faults";
case V4L2_CID_FLASH_CHARGE: return "Charge";
case V4L2_CID_FLASH_READY: return "Ready to strobe";

default:
return NULL;
}
Expand Down Expand Up @@ -445,12 +475,17 @@ void v4l2_ctrl_fill(u32 id, const char **name, enum v4l2_ctrl_type *type,
case V4L2_CID_PILOT_TONE_ENABLED:
case V4L2_CID_ILLUMINATORS_1:
case V4L2_CID_ILLUMINATORS_2:
case V4L2_CID_FLASH_STROBE_STATUS:
case V4L2_CID_FLASH_CHARGE:
case V4L2_CID_FLASH_READY:
*type = V4L2_CTRL_TYPE_BOOLEAN;
*min = 0;
*max = *step = 1;
break;
case V4L2_CID_PAN_RESET:
case V4L2_CID_TILT_RESET:
case V4L2_CID_FLASH_STROBE:
case V4L2_CID_FLASH_STROBE_STOP:
*type = V4L2_CTRL_TYPE_BUTTON;
*flags |= V4L2_CTRL_FLAG_WRITE_ONLY;
*min = *max = *step = *def = 0;
Expand All @@ -474,6 +509,8 @@ void v4l2_ctrl_fill(u32 id, const char **name, enum v4l2_ctrl_type *type,
case V4L2_CID_EXPOSURE_AUTO:
case V4L2_CID_COLORFX:
case V4L2_CID_TUNE_PREEMPHASIS:
case V4L2_CID_FLASH_LED_MODE:
case V4L2_CID_FLASH_STROBE_SOURCE:
*type = V4L2_CTRL_TYPE_MENU;
break;
case V4L2_CID_RDS_TX_PS_NAME:
Expand All @@ -484,6 +521,7 @@ void v4l2_ctrl_fill(u32 id, const char **name, enum v4l2_ctrl_type *type,
case V4L2_CID_CAMERA_CLASS:
case V4L2_CID_MPEG_CLASS:
case V4L2_CID_FM_TX_CLASS:
case V4L2_CID_FLASH_CLASS:
*type = V4L2_CTRL_TYPE_CTRL_CLASS;
/* You can neither read not write these */
*flags |= V4L2_CTRL_FLAG_READ_ONLY | V4L2_CTRL_FLAG_WRITE_ONLY;
Expand All @@ -496,6 +534,9 @@ void v4l2_ctrl_fill(u32 id, const char **name, enum v4l2_ctrl_type *type,
/* Max is calculated as RGB888 that is 2^24 */
*max = 0xFFFFFF;
break;
case V4L2_CID_FLASH_FAULT:
*type = V4L2_CTRL_TYPE_BITMASK;
break;
default:
*type = V4L2_CTRL_TYPE_INTEGER;
break;
Expand Down Expand Up @@ -541,6 +582,10 @@ void v4l2_ctrl_fill(u32 id, const char **name, enum v4l2_ctrl_type *type,
case V4L2_CID_ZOOM_RELATIVE:
*flags |= V4L2_CTRL_FLAG_WRITE_ONLY;
break;
case V4L2_CID_FLASH_STROBE_STATUS:
case V4L2_CID_FLASH_READY:
*flags |= V4L2_CTRL_FLAG_READ_ONLY;
break;
}
}
EXPORT_SYMBOL(v4l2_ctrl_fill);
Expand Down
36 changes: 36 additions & 0 deletions include/linux/videodev2.h
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Original file line number Diff line number Diff line change
Expand Up @@ -1027,6 +1027,7 @@ struct v4l2_ext_controls {
#define V4L2_CTRL_CLASS_MPEG 0x00990000 /* MPEG-compression controls */
#define V4L2_CTRL_CLASS_CAMERA 0x009a0000 /* Camera class controls */
#define V4L2_CTRL_CLASS_FM_TX 0x009b0000 /* FM Modulator control class */
#define V4L2_CTRL_CLASS_FLASH 0x009c0000 /* Camera flash controls */

#define V4L2_CTRL_ID_MASK (0x0fffffff)
#define V4L2_CTRL_ID2CLASS(id) ((id) & 0x0fff0000UL)
Expand Down Expand Up @@ -1429,6 +1430,41 @@ enum v4l2_preemphasis {
#define V4L2_CID_TUNE_POWER_LEVEL (V4L2_CID_FM_TX_CLASS_BASE + 113)
#define V4L2_CID_TUNE_ANTENNA_CAPACITOR (V4L2_CID_FM_TX_CLASS_BASE + 114)

/* Flash and privacy (indicator) light controls */
#define V4L2_CID_FLASH_CLASS_BASE (V4L2_CTRL_CLASS_FLASH | 0x900)
#define V4L2_CID_FLASH_CLASS (V4L2_CTRL_CLASS_FLASH | 1)

#define V4L2_CID_FLASH_LED_MODE (V4L2_CID_FLASH_CLASS_BASE + 1)
enum v4l2_flash_led_mode {
V4L2_FLASH_LED_MODE_NONE,
V4L2_FLASH_LED_MODE_FLASH,
V4L2_FLASH_LED_MODE_TORCH,
};

#define V4L2_CID_FLASH_STROBE_SOURCE (V4L2_CID_FLASH_CLASS_BASE + 2)
enum v4l2_flash_strobe_source {
V4L2_FLASH_STROBE_SOURCE_SOFTWARE,
V4L2_FLASH_STROBE_SOURCE_EXTERNAL,
};

#define V4L2_CID_FLASH_STROBE (V4L2_CID_FLASH_CLASS_BASE + 3)
#define V4L2_CID_FLASH_STROBE_STOP (V4L2_CID_FLASH_CLASS_BASE + 4)
#define V4L2_CID_FLASH_STROBE_STATUS (V4L2_CID_FLASH_CLASS_BASE + 5)

#define V4L2_CID_FLASH_TIMEOUT (V4L2_CID_FLASH_CLASS_BASE + 6)
#define V4L2_CID_FLASH_INTENSITY (V4L2_CID_FLASH_CLASS_BASE + 7)
#define V4L2_CID_FLASH_TORCH_INTENSITY (V4L2_CID_FLASH_CLASS_BASE + 8)
#define V4L2_CID_FLASH_INDICATOR_INTENSITY (V4L2_CID_FLASH_CLASS_BASE + 9)

#define V4L2_CID_FLASH_FAULT (V4L2_CID_FLASH_CLASS_BASE + 10)
#define V4L2_FLASH_FAULT_OVER_VOLTAGE (1 << 0)
#define V4L2_FLASH_FAULT_TIMEOUT (1 << 1)
#define V4L2_FLASH_FAULT_OVER_TEMPERATURE (1 << 2)
#define V4L2_FLASH_FAULT_SHORT_CIRCUIT (1 << 3)

#define V4L2_CID_FLASH_CHARGE (V4L2_CID_FLASH_CLASS_BASE + 11)
#define V4L2_CID_FLASH_READY (V4L2_CID_FLASH_CLASS_BASE + 12)

/*
* T U N I N G
*/
Expand Down

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