xref: /openbmc/linux/include/drm/i2c/sil164.h (revision e190bfe5)
1 /*
2  * Copyright (C) 2010 Francisco Jerez.
3  * All Rights Reserved.
4  *
5  * Permission is hereby granted, free of charge, to any person obtaining
6  * a copy of this software and associated documentation files (the
7  * "Software"), to deal in the Software without restriction, including
8  * without limitation the rights to use, copy, modify, merge, publish,
9  * distribute, sublicense, and/or sell copies of the Software, and to
10  * permit persons to whom the Software is furnished to do so, subject to
11  * the following conditions:
12  *
13  * The above copyright notice and this permission notice (including the
14  * next paragraph) shall be included in all copies or substantial
15  * portions of the Software.
16  *
17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
18  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
19  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
20  * IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
21  * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
22  * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
23  * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
24  *
25  */
26 
27 #ifndef __DRM_I2C_SIL164_H__
28 #define __DRM_I2C_SIL164_H__
29 
30 /**
31  * struct sil164_encoder_params
32  *
33  * Describes how the sil164 is connected to the GPU. It should be used
34  * as the @params parameter of its @set_config method.
35  *
36  * See "http://www.siliconimage.com/docs/SiI-DS-0021-E-164.pdf".
37  */
38 struct sil164_encoder_params {
39 	enum {
40 		SIL164_INPUT_EDGE_FALLING = 0,
41 		SIL164_INPUT_EDGE_RISING
42 	} input_edge;
43 
44 	enum {
45 		SIL164_INPUT_WIDTH_12BIT = 0,
46 		SIL164_INPUT_WIDTH_24BIT
47 	} input_width;
48 
49 	enum {
50 		SIL164_INPUT_SINGLE_EDGE = 0,
51 		SIL164_INPUT_DUAL_EDGE
52 	} input_dual;
53 
54 	enum {
55 		SIL164_PLL_FILTER_ON = 0,
56 		SIL164_PLL_FILTER_OFF,
57 	} pll_filter;
58 
59 	int input_skew; /** < Allowed range [-4, 3], use 0 for no de-skew. */
60 	int duallink_skew; /** < Allowed range [-4, 3]. */
61 };
62 
63 #endif
64