1/* SPDX-License-Identifier: GPL-2.0-or-later */
2/*
3 * Table of the Omap register configurations for the FUNC_MUX and
4 * PULL_DWN combinations.
5 *
6 * Copyright (C) 2004 - 2008 Texas Instruments Inc.
7 * Copyright (C) 2003 - 2008 Nokia Corporation
8 *
9 * Written by Tony Lindgren
10 *
11 * NOTE: Please use the following naming style for new pin entries.
12 *	 For example, W8_1610_MMC2_DAT0, where:
13 *	 - W8	     = ball
14 *	 - 1610	     = 1510 or 1610, none if common for both 1510 and 1610
15 *	 - MMC2_DAT0 = function
16 */
17
18#ifndef __ASM_ARCH_MUX_H
19#define __ASM_ARCH_MUX_H
20
21#include <linux/soc/ti/omap1-mux.h>
22
23#define PU_PD_SEL_NA		0	/* No pu_pd reg available */
24#define PULL_DWN_CTRL_NA	0	/* No pull-down control needed */
25
26#ifdef	CONFIG_OMAP_MUX_DEBUG
27#define MUX_REG(reg, mode_offset, mode) .mux_reg_name = "FUNC_MUX_CTRL_"#reg, \
28					.mux_reg = FUNC_MUX_CTRL_##reg, \
29					.mask_offset = mode_offset, \
30					.mask = mode,
31
32#define PULL_REG(reg, bit, status)	.pull_name = "PULL_DWN_CTRL_"#reg, \
33					.pull_reg = PULL_DWN_CTRL_##reg, \
34					.pull_bit = bit, \
35					.pull_val = status,
36
37#define PU_PD_REG(reg, status)		.pu_pd_name = "PU_PD_SEL_"#reg, \
38					.pu_pd_reg = PU_PD_SEL_##reg, \
39					.pu_pd_val = status,
40
41#define MUX_REG_7XX(reg, mode_offset, mode) .mux_reg_name = "OMAP7XX_IO_CONF_"#reg, \
42					.mux_reg = OMAP7XX_IO_CONF_##reg, \
43					.mask_offset = mode_offset, \
44					.mask = mode,
45
46#define PULL_REG_7XX(reg, bit, status)	.pull_name = "OMAP7XX_IO_CONF_"#reg, \
47					.pull_reg = OMAP7XX_IO_CONF_##reg, \
48					.pull_bit = bit, \
49					.pull_val = status,
50
51#else
52
53#define MUX_REG(reg, mode_offset, mode) .mux_reg = FUNC_MUX_CTRL_##reg, \
54					.mask_offset = mode_offset, \
55					.mask = mode,
56
57#define PULL_REG(reg, bit, status)	.pull_reg = PULL_DWN_CTRL_##reg, \
58					.pull_bit = bit, \
59					.pull_val = status,
60
61#define PU_PD_REG(reg, status)		.pu_pd_reg = PU_PD_SEL_##reg, \
62					.pu_pd_val = status,
63
64#define MUX_REG_7XX(reg, mode_offset, mode) \
65					.mux_reg = OMAP7XX_IO_CONF_##reg, \
66					.mask_offset = mode_offset, \
67					.mask = mode,
68
69#define PULL_REG_7XX(reg, bit, status)	.pull_reg = OMAP7XX_IO_CONF_##reg, \
70					.pull_bit = bit, \
71					.pull_val = status,
72
73#endif /* CONFIG_OMAP_MUX_DEBUG */
74
75#define MUX_CFG(desc, mux_reg, mode_offset, mode,	\
76		pull_reg, pull_bit, pull_status,	\
77		pu_pd_reg, pu_pd_status, debug_status)	\
78{							\
79	.name =	 desc,					\
80	.debug = debug_status,				\
81	MUX_REG(mux_reg, mode_offset, mode)		\
82	PULL_REG(pull_reg, pull_bit, pull_status)	\
83	PU_PD_REG(pu_pd_reg, pu_pd_status)		\
84},
85
86
87/*
88 * OMAP730/850 has a slightly different config for the pin mux.
89 * - config regs are the OMAP7XX_IO_CONF_x regs (see omap7xx.h) regs and
90 *   not the FUNC_MUX_CTRL_x regs from hardware.h
91 * - for pull-up/down, only has one enable bit which is in the same register
92 *   as mux config
93 */
94#define MUX_CFG_7XX(desc, mux_reg, mode_offset, mode,	\
95		   pull_bit, pull_status, debug_status)\
96{							\
97	.name =	 desc,					\
98	.debug = debug_status,				\
99	MUX_REG_7XX(mux_reg, mode_offset, mode)		\
100	PULL_REG_7XX(mux_reg, pull_bit, pull_status)	\
101	PU_PD_REG(NA, 0)		\
102},
103
104struct pin_config {
105	char 			*name;
106	const unsigned int 	mux_reg;
107	unsigned char		debug;
108
109	const unsigned char mask_offset;
110	const unsigned char mask;
111
112	const char *pull_name;
113	const unsigned int pull_reg;
114	const unsigned char pull_val;
115	const unsigned char pull_bit;
116
117	const char *pu_pd_name;
118	const unsigned int pu_pd_reg;
119	const unsigned char pu_pd_val;
120
121#if	defined(CONFIG_OMAP_MUX_DEBUG) || defined(CONFIG_OMAP_MUX_WARNINGS)
122	const char *mux_reg_name;
123#endif
124
125};
126
127struct omap_mux_cfg {
128	struct pin_config	*pins;
129	unsigned long		size;
130	int			(*cfg_reg)(const struct pin_config *cfg);
131};
132
133#ifdef	CONFIG_OMAP_MUX
134/* setup pin muxing in Linux */
135extern int omap1_mux_init(void);
136extern int omap_mux_register(struct omap_mux_cfg *);
137#else
138/* boot loader does it all (no warnings from CONFIG_OMAP_MUX_WARNINGS) */
139static inline int omap1_mux_init(void) { return 0; }
140#endif
141
142extern int omap2_mux_init(void);
143
144#endif
145