1 /* SPDX-License-Identifier: GPL-2.0+ */
2 /*
3  * (C) Copyright 2010
4  * Marvell Semiconductor <www.marvell.com>
5  * Written-by: Prafulla Wadaskar <prafulla@marvell.com>
6  */
7 
8 #ifndef __MVMFP_H
9 #define __MVMFP_H
10 
11 /*
12  * Header file for MultiFunctionPin (MFP) Configururation framework
13  *
14  * Processors Supported:
15  * 1. Marvell ARMADA100 Processors
16  *
17  * processor to be supported should be added here
18  */
19 
20 /*
21  * MFP configuration is represented by a 32-bit unsigned integer
22  */
23 #ifdef CONFIG_MVMFP_V2
24 #define MFP(_off, _pull, _drv, _slp, _edge, _sleep, _afn) ( \
25 	/* bits 31..16 - MFP Register Offset */	(((_off) & 0xffff) << 16) | \
26 	/* bits 15..13 - Run Mode Pull State */	(((_pull) & 0x7) << 13) | \
27 	/* bit  12..11 - Driver Strength */	(((_drv) & 0x3) << 11) | \
28 	/* bits 10     - pad driver */		(((_slp) & 0x1) << 10) | \
29 	/* bit  09..07 - sleep mode */		(((_sleep) & 0xe) << 6) | \
30 	/* bits 06..04 - Edge Detection */	(((_edge) & 0x7) << 4) | \
31 	/* bits 03     - sleep mode */		(((_sleep) & 0x1) << 3) | \
32 	/* bits 02..00 - Alt-fun select */	((_afn) & 0x7))
33 #else
34 #define MFP(_off, _pull, _drv, _slp, _edge, _sleep, _afn) ( \
35 	/* bits 31..16 - MFP Register Offset */	(((_off) & 0xffff) << 16) | \
36 	/* bits 15..13 - Run Mode Pull State */	(((_pull) & 0x7) << 13) | \
37 	/* bit  12     - Unused */ \
38 	/* bits 11..10 - Driver Strength */	(((_drv) & 0x3) << 10) | \
39 	/* bit  09..07 - sleep mode */		(((_sleep) & 0xe) << 6) | \
40 	/* bits 06..04 - Edge Detection */	(((_edge) & 0x7) << 4) | \
41 	/* bits 03     - sleep mode */		(((_sleep) & 0x1) << 3) | \
42 	/* bits 02..00 - Alt-fun select */	((_afn) & 0x7))
43 #endif
44 
45 /*
46  * to facilitate the definition, the following macros are provided
47  *
48  * 				    offset, pull,pF, drv,dF, edge,eF ,afn,aF
49  */
50 #define MFP_OFFSET_MASK		MFP(0xffff,    0,    0,   0,   0,   0,   0)
51 #define MFP_REG(x)		MFP(x,         0,    0,   0,   0,   0,   0)
52 #define MFP_REG_GET_OFFSET(x)	((x & MFP_OFFSET_MASK) >> 16)
53 
54 #define MFP_AF0			MFP(0x0000,    0,    0,   0,   0,   0,   0)
55 #define MFP_AF1			MFP(0x0000,    0,    0,   0,   0,   0,   1)
56 #define MFP_AF2			MFP(0x0000,    0,    0,   0,   0,   0,   2)
57 #define MFP_AF3			MFP(0x0000,    0,    0,   0,   0,   0,   3)
58 #define MFP_AF4			MFP(0x0000,    0,    0,   0,   0,   0,   4)
59 #define MFP_AF5			MFP(0x0000,    0,    0,   0,   0,   0,   5)
60 #define MFP_AF6			MFP(0x0000,    0,    0,   0,   0,   0,   6)
61 #define MFP_AF7			MFP(0x0000,    0,    0,   0,   0,   0,   7)
62 #define MFP_AF_MASK		MFP(0x0000,    0,    0,   0,   0,   0,   7)
63 
64 #define MFP_SLEEP_CTRL2		MFP(0x0000,    0,    0,   0,   0,   1,   0)
65 #define MFP_SLEEP_DIR		MFP(0x0000,    0,    0,   0,   0,   2,   0)
66 #define MFP_SLEEP_DATA		MFP(0x0000,    0,    0,   0,   0,   4,   0)
67 #define MFP_SLEEP_CTRL		MFP(0x0000,    0,    0,   0,   0,   8,   0)
68 #define MFP_SLEEP_MASK		MFP(0x0000,    0,    0,   0,   0, 0xf,   0)
69 
70 #define MFP_LPM_EDGE_NONE	MFP(0x0000,    0,    0,   0,   4,   0,   0)
71 #define MFP_LPM_EDGE_RISE	MFP(0x0000,    0,    0,   0,   1,   0,   0)
72 #define MFP_LPM_EDGE_FALL	MFP(0x0000,    0,    0,   0,   2,   0,   0)
73 #define MFP_LPM_EDGE_BOTH	MFP(0x0000,    0,    0,   0,   3,   0,   0)
74 #define MFP_LPM_EDGE_MASK	MFP(0x0000,    0,    0,   0,   7,   0,   0)
75 
76 #define MFP_SLP_DI		MFP(0x0000,    0,    0,   1,   0,   0,   0)
77 
78 #define MFP_DRIVE_VERY_SLOW	MFP(0x0000,    0,    0,   0,   0,   0,   0)
79 #define MFP_DRIVE_SLOW		MFP(0x0000,    0,    1,   0,   0,   0,   0)
80 #define MFP_DRIVE_MEDIUM	MFP(0x0000,    0,    2,   0,   0,   0,   0)
81 #define MFP_DRIVE_FAST		MFP(0x0000,    0,    3,   0,   0,   0,   0)
82 #define MFP_DRIVE_MASK		MFP(0x0000,    0,    3,   0,   0,   0,   0)
83 
84 #define MFP_PULL_NONE		MFP(0x0000,    0,    0,   0,   0,   0,   0)
85 #define MFP_PULL_LOW		MFP(0x0000,    5,    0,   0,   0,   0,   0)
86 #define MFP_PULL_HIGH		MFP(0x0000,    6,    0,   0,   0,   0,   0)
87 #define MFP_PULL_BOTH		MFP(0x0000,    7,    0,   0,   0,   0,   0)
88 #define MFP_PULL_FLOAT		MFP(0x0000,    4,    0,   0,   0,   0,   0)
89 #define MFP_PULL_MASK		MFP(0x0000,    7,    0,   0,   0,   0,   0)
90 
91 #define MFP_VALUE_MASK		(MFP_PULL_MASK | MFP_DRIVE_MASK | MFP_SLP_DI \
92 				| MFP_LPM_EDGE_MASK | MFP_SLEEP_MASK \
93 				| MFP_AF_MASK)
94 #define MFP_EOC			0xffffffff	/* indicates end-of-conf */
95 
96 /* Functions */
97 void mfp_config(u32 *mfp_cfgs);
98 
99 #endif /* __MVMFP_H */
100