ipa: ipu3: Convert to pragma once

Remove the verbose #ifndef/#define/#endif pattern for maintaining
header idempotency, and replace it with a simple #pragma once.

This simplifies the headers, and prevents redundant changes when
header files get moved.

Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Jean-Michel Hautbois <jeanmichel.hautbois@ideasonboard.com>

src/ipa/ipu3/algorithms/agc.h

@@ -4,8 +4,8 @@
  *
  * agc.h - IPU3 AGC/AEC mean-based control algorithm
  */
-#ifndef __LIBCAMERA_IPU3_ALGORITHMS_AGC_H__
-#define __LIBCAMERA_IPU3_ALGORITHMS_AGC_H__
+
+#pragma once
 
 #include <linux/intel-ipu3.h>
 
@@ -59,5 +59,3 @@ private:
 } /* namespace ipa::ipu3::algorithms */
 
 } /* namespace libcamera */
-
-#endif /* __LIBCAMERA_IPU3_ALGORITHMS_AGC_H__ */

src/ipa/ipu3/algorithms/algorithm.h

@@ -4,8 +4,8 @@
  *
  * algorithm.h - IPU3 control algorithm interface
  */
-#ifndef __LIBCAMERA_IPA_IPU3_ALGORITHM_H__
-#define __LIBCAMERA_IPA_IPU3_ALGORITHM_H__
+
+#pragma once
 
 #include <libcamera/ipa/ipu3_ipa_interface.h>
 
@@ -28,5 +28,3 @@ public:
 } /* namespace ipa::ipu3 */
 
 } /* namespace libcamera */
-
-#endif /* __LIBCAMERA_IPA_IPU3_ALGORITHM_H__ */

src/ipa/ipu3/algorithms/awb.h

@@ -4,8 +4,8 @@
  *
  * awb.h - IPU3 AWB control algorithm
  */
-#ifndef __LIBCAMERA_IPU3_ALGORITHMS_AWB_H__
-#define __LIBCAMERA_IPU3_ALGORITHMS_AWB_H__
+
+#pragma once
 
 #include <vector>
 
@@ -86,4 +86,3 @@ private:
 } /* namespace ipa::ipu3::algorithms */
 
 } /* namespace libcamera*/
-#endif /* __LIBCAMERA_IPU3_ALGORITHMS_AWB_H__ */

src/ipa/ipu3/algorithms/blc.h

@@ -4,8 +4,8 @@
  *
  * black_correction.h - IPU3 Black Level Correction control
  */
-#ifndef __LIBCAMERA_IPU3_ALGORITHMS_BLC_H__
-#define __LIBCAMERA_IPU3_ALGORITHMS_BLC_H__
+
+#pragma once
 
 #include "algorithm.h"
 
@@ -24,5 +24,3 @@ public:
 } /* namespace ipa::ipu3::algorithms */
 
 } /* namespace libcamera */
-
-#endif /* __LIBCAMERA_IPU3_ALGORITHMS_BLC_H__ */

src/ipa/ipu3/algorithms/tone_mapping.h

@@ -4,8 +4,8 @@
  *
  * tone_mapping.h - IPU3 ToneMapping and Gamma control
  */
-#ifndef __LIBCAMERA_IPU3_ALGORITHMS_TONE_MAPPING_H__
-#define __LIBCAMERA_IPU3_ALGORITHMS_TONE_MAPPING_H__
+
+#pragma once
 
 #include "algorithm.h"
 
@@ -29,5 +29,3 @@ private:
 } /* namespace ipa::ipu3::algorithms */
 
 } /* namespace libcamera */
-
-#endif /* __LIBCAMERA_IPU3_ALGORITHMS_TONE_MAPPING_H__ */