v4.19.13 snapshot.
diff --git a/include/media/i2c/m52790.h b/include/media/i2c/m52790.h
new file mode 100644
index 0000000..8d9db3c
--- /dev/null
+++ b/include/media/i2c/m52790.h
@@ -0,0 +1,93 @@
+/*
+ m52790.h - definition for m52790 inputs and outputs
+
+ Copyright (C) 2007 Hans Verkuil (hverkuil@xs4all.nl)
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+*/
+
+#ifndef _M52790_H_
+#define _M52790_H_
+
+/* Input routing switch 1 */
+
+#define M52790_SW1_IN_MASK 0x0003
+#define M52790_SW1_IN_TUNER 0x0000
+#define M52790_SW1_IN_V2 0x0001
+#define M52790_SW1_IN_V3 0x0002
+#define M52790_SW1_IN_V4 0x0003
+
+/* Selects component input instead of composite */
+#define M52790_SW1_YCMIX 0x0004
+
+
+/* Input routing switch 2 */
+
+#define M52790_SW2_IN_MASK 0x0300
+#define M52790_SW2_IN_TUNER 0x0000
+#define M52790_SW2_IN_V2 0x0100
+#define M52790_SW2_IN_V3 0x0200
+#define M52790_SW2_IN_V4 0x0300
+
+/* Selects component input instead of composite */
+#define M52790_SW2_YCMIX 0x0400
+
+
+/* Output routing switch 1 */
+
+/* Enable 6dB amplifier for composite out */
+#define M52790_SW1_V_AMP 0x0008
+
+/* Enable 6dB amplifier for component out */
+#define M52790_SW1_YC_AMP 0x0010
+
+/* Audio output mode */
+#define M52790_SW1_AUDIO_MASK 0x00c0
+#define M52790_SW1_AUDIO_MUTE 0x0000
+#define M52790_SW1_AUDIO_R 0x0040
+#define M52790_SW1_AUDIO_L 0x0080
+#define M52790_SW1_AUDIO_STEREO 0x00c0
+
+
+/* Output routing switch 2 */
+
+/* Enable 6dB amplifier for composite out */
+#define M52790_SW2_V_AMP 0x0800
+
+/* Enable 6dB amplifier for component out */
+#define M52790_SW2_YC_AMP 0x1000
+
+/* Audio output mode */
+#define M52790_SW2_AUDIO_MASK 0xc000
+#define M52790_SW2_AUDIO_MUTE 0x0000
+#define M52790_SW2_AUDIO_R 0x4000
+#define M52790_SW2_AUDIO_L 0x8000
+#define M52790_SW2_AUDIO_STEREO 0xc000
+
+
+/* Common values */
+#define M52790_IN_TUNER (M52790_SW1_IN_TUNER | M52790_SW2_IN_TUNER)
+#define M52790_IN_V2 (M52790_SW1_IN_V2 | M52790_SW2_IN_V2)
+#define M52790_IN_V3 (M52790_SW1_IN_V3 | M52790_SW2_IN_V3)
+#define M52790_IN_V4 (M52790_SW1_IN_V4 | M52790_SW2_IN_V4)
+
+#define M52790_OUT_STEREO (M52790_SW1_AUDIO_STEREO | \
+ M52790_SW2_AUDIO_STEREO)
+#define M52790_OUT_AMP_STEREO (M52790_SW1_AUDIO_STEREO | \
+ M52790_SW1_V_AMP | \
+ M52790_SW2_AUDIO_STEREO | \
+ M52790_SW2_V_AMP)
+
+#endif