xref: /openbmc/linux/include/media/i2c/upd64083.h (revision e3d786a3)
1 /*
2  * upd6408x - NEC Electronics 3-Dimensional Y/C separation input defines
3  *
4  * 2006 by Hans Verkuil (hverkuil@xs4all.nl)
5  *
6  * This program is free software; you can redistribute it and/or
7  * modify it under the terms of the GNU General Public License
8  * as published by the Free Software Foundation; either version 2
9  * of the License, or (at your option) any later version.
10  *
11  * This program is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14  * GNU General Public License for more details.
15  */
16 
17 #ifndef _UPD64083_H_
18 #define _UPD64083_H_
19 
20 /* There are two bits of information that the driver needs in order
21    to select the correct routing: the operating mode and the selection
22    of the Y input (external or internal).
23 
24    The first two operating modes expect a composite signal on the Y input,
25    the second two operating modes use both the Y and C inputs.
26 
27    Normally YCS_MODE is used for tuner and composite inputs, and the
28    YCNR mode is used for S-Video inputs.
29 
30    The external Y-ADC is selected when the composite input comes from a
31    upd64031a ghost reduction device. If this device is not present, or
32    the input is a S-Video signal, then the internal Y-ADC input should
33    be used. */
34 
35 /* Operating modes: */
36 
37 /* YCS mode: Y/C separation (burst locked clocking) */
38 #define UPD64083_YCS_MODE      0
39 /* YCS+ mode: 2D Y/C separation and YCNR (burst locked clocking) */
40 #define UPD64083_YCS_PLUS_MODE 1
41 
42 /* Note: the following two modes cannot be used in combination with the
43    external Y-ADC. */
44 /* MNNR mode: frame comb type YNR+C delay (line locked clocking) */
45 #define UPD64083_MNNR_MODE     2
46 /* YCNR mode: frame recursive YCNR (burst locked clocking) */
47 #define UPD64083_YCNR_MODE     3
48 
49 /* Select external Y-ADC: this should be set if this device is used in
50    combination with the upd64031a ghost reduction device.
51    Otherwise leave at 0 (use internal Y-ADC). */
52 #define UPD64083_EXT_Y_ADC     (1 << 2)
53 
54 #endif
55