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[media] v4l2-flash-led-class.h: document v4l2_flash_ops
Fix this warning:
./include/media/v4l2-flash-led-class.h:103: WARNING: c:type reference target not found: v4l2_flash_ops
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
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include/media/v4l2-flash-led-class.h
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include/media/v4l2-flash-led-class.h
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struct v4l2_flash;
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enum led_brightness;
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/*
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/**
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* struct v4l2_flash_ctrl_data - flash control initialization data, filled
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* basing on the features declared by the LED flash
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* class driver in the v4l2_flash_config
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u32 cid;
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};
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/**
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* struct v4l2_flash_ops - V4L2 flash operations
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*
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* @external_strobe_set: Setup strobing the flash by hardware pin state
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* assertion.
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* @intensity_to_led_brightness: Convert intensity to brightness in a device
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* specific manner
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* @led_brightness_to_intensity: convert brightness to intensity in a device
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* specific manner.
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*/
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struct v4l2_flash_ops {
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/* setup strobing the flash by hardware pin state assertion */
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int (*external_strobe_set)(struct v4l2_flash *v4l2_flash,
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bool enable);
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/* convert intensity to brightness in a device specific manner */
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enum led_brightness (*intensity_to_led_brightness)
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(struct v4l2_flash *v4l2_flash, s32 intensity);
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/* convert brightness to intensity in a device specific manner */
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s32 (*led_brightness_to_intensity)
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(struct v4l2_flash *v4l2_flash, enum led_brightness);
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};