1 /*
2  * Copyright (C) 2015 Linaro
3  * Peter Griffin <peter.griffin@linaro.org>
4  *
5  * SPDX-License-Identifier:	GPL-2.0+
6  */
7 
8 #ifndef __ASM_ARM_ARCH_PINMUX_H
9 #define __ASM_ARM_ARCH_PINMUX_H
10 
11 #include "periph.h"
12 
13 
14 /* iomg bit definition */
15 #define MUX_M0          0
16 #define MUX_M1          1
17 #define MUX_M2          2
18 #define MUX_M3          3
19 #define MUX_M4          4
20 #define MUX_M5          5
21 #define MUX_M6          6
22 #define MUX_M7          7
23 
24 /* iocg bit definition */
25 #define PULL_MASK       (3)
26 #define PULL_DIS        (0)
27 #define PULL_UP         (1 << 0)
28 #define PULL_DOWN       (1 << 1)
29 
30 /* drive strength definition */
31 #define DRIVE_MASK      (7 << 4)
32 #define DRIVE1_02MA     (0 << 4)
33 #define DRIVE1_04MA     (1 << 4)
34 #define DRIVE1_08MA     (2 << 4)
35 #define DRIVE1_10MA     (3 << 4)
36 #define DRIVE2_02MA     (0 << 4)
37 #define DRIVE2_04MA     (1 << 4)
38 #define DRIVE2_08MA     (2 << 4)
39 #define DRIVE2_10MA     (3 << 4)
40 #define DRIVE3_04MA     (0 << 4)
41 #define DRIVE3_08MA     (1 << 4)
42 #define DRIVE3_12MA     (2 << 4)
43 #define DRIVE3_16MA     (3 << 4)
44 #define DRIVE3_20MA     (4 << 4)
45 #define DRIVE3_24MA     (5 << 4)
46 #define DRIVE3_32MA     (6 << 4)
47 #define DRIVE3_40MA     (7 << 4)
48 #define DRIVE4_02MA     (0 << 4)
49 #define DRIVE4_04MA     (2 << 4)
50 #define DRIVE4_08MA     (4 << 4)
51 #define DRIVE4_10MA     (6 << 4)
52 
53 #define HI6220_PINMUX0_BASE 0xf7010000
54 #define HI6220_PINMUX1_BASE 0xf7010800
55 
56 #ifndef	__ASSEMBLY__
57 
58 /* maybe more registers, but highest used is 123 */
59 #define REG_NUM 123
60 
61 struct hi6220_pinmux0_regs {
62 	uint32_t	iomg[REG_NUM];
63 };
64 
65 struct hi6220_pinmux1_regs {
66 	uint32_t	iocfg[REG_NUM];
67 };
68 
69 #endif
70 
71 /**
72  * Configures the pinmux for a particular peripheral.
73  *
74  * This function will configure the peripheral pinmux along with
75  * pull-up/down and drive strength.
76  *
77  * @param peripheral	peripheral to be configured
78  * @return 0 if ok, -1 on error (e.g. unsupported peripheral)
79  */
80 int hi6220_pinmux_config(int peripheral);
81 
82 #endif
83