Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
1/*
2 * SuperH Pin Function Controller Support
3 *
4 * Copyright (c) 2008 Magnus Damm
5 *
6 * This file is subject to the terms and conditions of the GNU General Public
7 * License. See the file "COPYING" in the main directory of this archive
8 * for more details.
9 */
10
11#ifndef __SH_PFC_H
12#define __SH_PFC_H
13
14#include <asm-generic/gpio.h>
15
16typedef unsigned short pinmux_enum_t;
17typedef unsigned short pinmux_flag_t;
18
19#define PINMUX_TYPE_NONE 0
20#define PINMUX_TYPE_FUNCTION 1
21#define PINMUX_TYPE_GPIO 2
22#define PINMUX_TYPE_OUTPUT 3
23#define PINMUX_TYPE_INPUT 4
24#define PINMUX_TYPE_INPUT_PULLUP 5
25#define PINMUX_TYPE_INPUT_PULLDOWN 6
26
27#define PINMUX_FLAG_TYPE (0x7)
28#define PINMUX_FLAG_WANT_PULLUP (1 << 3)
29#define PINMUX_FLAG_WANT_PULLDOWN (1 << 4)
30
31#define PINMUX_FLAG_DBIT_SHIFT 5
32#define PINMUX_FLAG_DBIT (0x1f << PINMUX_FLAG_DBIT_SHIFT)
33#define PINMUX_FLAG_DREG_SHIFT 10
34#define PINMUX_FLAG_DREG (0x3f << PINMUX_FLAG_DREG_SHIFT)
35
36struct pinmux_gpio {
37 pinmux_enum_t enum_id;
38 pinmux_flag_t flags;
39};
40
41#define PINMUX_GPIO(gpio, data_or_mark) [gpio] = { data_or_mark }
42#define PINMUX_DATA(data_or_mark, ids...) data_or_mark, ids, 0
43
44struct pinmux_cfg_reg {
45 unsigned long reg, reg_width, field_width;
46 unsigned long *cnt;
47 pinmux_enum_t *enum_ids;
48 unsigned long *var_field_width;
49};
50
51#define PINMUX_CFG_REG(name, r, r_width, f_width) \
52 .reg = r, .reg_width = r_width, .field_width = f_width, \
53 .cnt = (unsigned long [r_width / f_width]) {}, \
54 .enum_ids = (pinmux_enum_t [(r_width / f_width) * (1 << f_width)])
55
56#define PINMUX_CFG_REG_VAR(name, r, r_width, var_fw0, var_fwn...) \
57 .reg = r, .reg_width = r_width, \
58 .cnt = (unsigned long [r_width]) {}, \
59 .var_field_width = (unsigned long [r_width]) { var_fw0, var_fwn, 0 }, \
60 .enum_ids = (pinmux_enum_t [])
61
62struct pinmux_data_reg {
63 unsigned long reg, reg_width, reg_shadow;
64 pinmux_enum_t *enum_ids;
65 void __iomem *mapped_reg;
66};
67
68#define PINMUX_DATA_REG(name, r, r_width) \
69 .reg = r, .reg_width = r_width, \
70 .enum_ids = (pinmux_enum_t [r_width]) \
71
72struct pinmux_irq {
73 int irq;
74 pinmux_enum_t *enum_ids;
75};
76
77#define PINMUX_IRQ(irq_nr, ids...) \
78 { .irq = irq_nr, .enum_ids = (pinmux_enum_t []) { ids, 0 } } \
79
80struct pinmux_range {
81 pinmux_enum_t begin;
82 pinmux_enum_t end;
83 pinmux_enum_t force;
84};
85
86struct pfc_window {
87 phys_addr_t phys;
88 void __iomem *virt;
89 unsigned long size;
90};
91
92struct pinmux_info {
93 char *name;
94 pinmux_enum_t reserved_id;
95 struct pinmux_range data;
96 struct pinmux_range input;
97 struct pinmux_range input_pd;
98 struct pinmux_range input_pu;
99 struct pinmux_range output;
100 struct pinmux_range mark;
101 struct pinmux_range function;
102
103 unsigned first_gpio, last_gpio;
104
105 struct pinmux_gpio *gpios;
106 struct pinmux_cfg_reg *cfg_regs;
107 struct pinmux_data_reg *data_regs;
108
109 pinmux_enum_t *gpio_data;
110 unsigned int gpio_data_size;
111
112 struct pinmux_irq *gpio_irq;
113 unsigned int gpio_irq_size;
114
115 struct resource *resource;
116 unsigned int num_resources;
117 struct pfc_window *window;
118
119 unsigned long unlock_reg;
120
121 struct gpio_chip chip;
122};
123
124int register_pinmux(struct pinmux_info *pip);
125int unregister_pinmux(struct pinmux_info *pip);
126
127/* helper macro for port */
128#define PORT_1(fn, pfx, sfx) fn(pfx, sfx)
129
130#define PORT_10(fn, pfx, sfx) \
131 PORT_1(fn, pfx##0, sfx), PORT_1(fn, pfx##1, sfx), \
132 PORT_1(fn, pfx##2, sfx), PORT_1(fn, pfx##3, sfx), \
133 PORT_1(fn, pfx##4, sfx), PORT_1(fn, pfx##5, sfx), \
134 PORT_1(fn, pfx##6, sfx), PORT_1(fn, pfx##7, sfx), \
135 PORT_1(fn, pfx##8, sfx), PORT_1(fn, pfx##9, sfx)
136
137#define PORT_90(fn, pfx, sfx) \
138 PORT_10(fn, pfx##1, sfx), PORT_10(fn, pfx##2, sfx), \
139 PORT_10(fn, pfx##3, sfx), PORT_10(fn, pfx##4, sfx), \
140 PORT_10(fn, pfx##5, sfx), PORT_10(fn, pfx##6, sfx), \
141 PORT_10(fn, pfx##7, sfx), PORT_10(fn, pfx##8, sfx), \
142 PORT_10(fn, pfx##9, sfx)
143
144#define _PORT_ALL(pfx, sfx) pfx##_##sfx
145#define _GPIO_PORT(pfx, sfx) PINMUX_GPIO(GPIO_PORT##pfx, PORT##pfx##_DATA)
146#define PORT_ALL(str) CPU_ALL_PORT(_PORT_ALL, PORT, str)
147#define GPIO_PORT_ALL() CPU_ALL_PORT(_GPIO_PORT, , unused)
148#define GPIO_FN(str) PINMUX_GPIO(GPIO_FN_##str, str##_MARK)
149
150/* helper macro for pinmux_enum_t */
151#define PORT_DATA_I(nr) \
152 PINMUX_DATA(PORT##nr##_DATA, PORT##nr##_FN0, PORT##nr##_IN)
153
154#define PORT_DATA_I_PD(nr) \
155 PINMUX_DATA(PORT##nr##_DATA, PORT##nr##_FN0, \
156 PORT##nr##_IN, PORT##nr##_IN_PD)
157
158#define PORT_DATA_I_PU(nr) \
159 PINMUX_DATA(PORT##nr##_DATA, PORT##nr##_FN0, \
160 PORT##nr##_IN, PORT##nr##_IN_PU)
161
162#define PORT_DATA_I_PU_PD(nr) \
163 PINMUX_DATA(PORT##nr##_DATA, PORT##nr##_FN0, \
164 PORT##nr##_IN, PORT##nr##_IN_PD, PORT##nr##_IN_PU)
165
166#define PORT_DATA_O(nr) \
167 PINMUX_DATA(PORT##nr##_DATA, PORT##nr##_FN0, PORT##nr##_OUT)
168
169#define PORT_DATA_IO(nr) \
170 PINMUX_DATA(PORT##nr##_DATA, PORT##nr##_FN0, PORT##nr##_OUT, \
171 PORT##nr##_IN)
172
173#define PORT_DATA_IO_PD(nr) \
174 PINMUX_DATA(PORT##nr##_DATA, PORT##nr##_FN0, PORT##nr##_OUT, \
175 PORT##nr##_IN, PORT##nr##_IN_PD)
176
177#define PORT_DATA_IO_PU(nr) \
178 PINMUX_DATA(PORT##nr##_DATA, PORT##nr##_FN0, PORT##nr##_OUT, \
179 PORT##nr##_IN, PORT##nr##_IN_PU)
180
181#define PORT_DATA_IO_PU_PD(nr) \
182 PINMUX_DATA(PORT##nr##_DATA, PORT##nr##_FN0, PORT##nr##_OUT, \
183 PORT##nr##_IN, PORT##nr##_IN_PD, PORT##nr##_IN_PU)
184
185/* helper macro for top 4 bits in PORTnCR */
186#define _PCRH(in, in_pd, in_pu, out) \
187 0, (out), (in), 0, \
188 0, 0, 0, 0, \
189 0, 0, (in_pd), 0, \
190 0, 0, (in_pu), 0
191
192#define PORTCR(nr, reg) \
193 { \
194 PINMUX_CFG_REG("PORT" nr "CR", reg, 8, 4) { \
195 _PCRH(PORT##nr##_IN, PORT##nr##_IN_PD, \
196 PORT##nr##_IN_PU, PORT##nr##_OUT), \
197 PORT##nr##_FN0, PORT##nr##_FN1, \
198 PORT##nr##_FN2, PORT##nr##_FN3, \
199 PORT##nr##_FN4, PORT##nr##_FN5, \
200 PORT##nr##_FN6, PORT##nr##_FN7 } \
201 }
202
203#endif /* __SH_PFC_H */