summaryrefslogtreecommitdiffstats
path: root/include/linux/platform_data/pinctrl-nomadik.h
blob: abf5bed84df37baffb0cba28c4d91c15977ea67e (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
/*
 * Structures and registers for GPIO access in the Nomadik SoC
 *
 * Copyright (C) 2008 STMicroelectronics
 *     Author: Prafulla WADASKAR <prafulla.wadaskar@st.com>
 * Copyright (C) 2009 Alessandro Rubini <rubini@unipv.it>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 */

#ifndef __PLAT_NOMADIK_GPIO
#define __PLAT_NOMADIK_GPIO

/*
 * pin configurations are represented by 32-bit integers:
 *
 *	bit  0.. 8 - Pin Number (512 Pins Maximum)
 *	bit  9..10 - Alternate Function Selection
 *	bit 11..12 - Pull up/down state
 *	bit     13 - Sleep mode behaviour
 *	bit     14 - Direction
 *	bit     15 - Value (if output)
 *	bit 16..18 - SLPM pull up/down state
 *	bit 19..20 - SLPM direction
 *	bit 21..22 - SLPM Value (if output)
 *	bit 23..25 - PDIS value (if input)
 *	bit	26 - Gpio mode
 *	bit	27 - Sleep mode
 *
 * to facilitate the definition, the following macros are provided
 *
 * PIN_CFG_DEFAULT - default config (0):
 *		     pull up/down = disabled
 *		     sleep mode = input/wakeup
 *		     direction = input
 *		     value = low
 *		     SLPM direction = same as normal
 *		     SLPM pull = same as normal
 *		     SLPM value = same as normal
 *
 * PIN_CFG	   - default config with alternate function
 */

typedef unsigned long pin_cfg_t;

#define PIN_NUM_MASK		0x1ff
#define PIN_NUM(x)		((x) & PIN_NUM_MASK)

#define PIN_ALT_SHIFT		9
#define PIN_ALT_MASK		(0x3 << PIN_ALT_SHIFT)
#define PIN_ALT(x)		(((x) & PIN_ALT_MASK) >> PIN_ALT_SHIFT)
#define PIN_GPIO		(NMK_GPIO_ALT_GPIO << PIN_ALT_SHIFT)
#define PIN_ALT_A		(NMK_GPIO_ALT_A << PIN_ALT_SHIFT)
#define PIN_ALT_B		(NMK_GPIO_ALT_B << PIN_ALT_SHIFT)
#define PIN_ALT_C		(NMK_GPIO_ALT_C << PIN_ALT_SHIFT)

#define PIN_PULL_SHIFT		11
#define PIN_PULL_MASK		(0x3 << PIN_PULL_SHIFT)
#define PIN_PULL(x)		(((x) & PIN_PULL_MASK) >> PIN_PULL_SHIFT)
#define PIN_PULL_NONE		(NMK_GPIO_PULL_NONE << PIN_PULL_SHIFT)
#define PIN_PULL_UP		(NMK_GPIO_PULL_UP << PIN_PULL_SHIFT)
#define PIN_PULL_DOWN		(NMK_GPIO_PULL_DOWN << PIN_PULL_SHIFT)

#define PIN_SLPM_SHIFT		13
#define PIN_SLPM_MASK		(0x1 << PIN_SLPM_SHIFT)
#define PIN_SLPM(x)		(((x) & PIN_SLPM_MASK) >> PIN_SLPM_SHIFT)
#define PIN_SLPM_MAKE_INPUT	(NMK_GPIO_SLPM_INPUT << PIN_SLPM_SHIFT)
#define PIN_SLPM_NOCHANGE	(NMK_GPIO_SLPM_NOCHANGE << PIN_SLPM_SHIFT)
/* These two replace the above in DB8500v2+ */
#define PIN_SLPM_WAKEUP_ENABLE	(NMK_GPIO_SLPM_WAKEUP_ENABLE << PIN_SLPM_SHIFT)
#define PIN_SLPM_WAKEUP_DISABLE	(NMK_GPIO_SLPM_WAKEUP_DISABLE << PIN_SLPM_SHIFT)
#define PIN_SLPM_USE_MUX_SETTINGS_IN_SLEEP PIN_SLPM_WAKEUP_DISABLE

#define PIN_SLPM_GPIO  PIN_SLPM_WAKEUP_ENABLE /* In SLPM, pin is a gpio */
#define PIN_SLPM_ALTFUNC PIN_SLPM_WAKEUP_DISABLE /* In SLPM, pin is altfunc */

#define PIN_DIR_SHIFT		14
#define PIN_DIR_MASK		(0x1 << PIN_DIR_SHIFT)
#define PIN_DIR(x)		(((x) & PIN_DIR_MASK) >> PIN_DIR_SHIFT)
#define PIN_DIR_INPUT		(0 << PIN_DIR_SHIFT)
#define PIN_DIR_OUTPUT		(1 << PIN_DIR_SHIFT)

#define PIN_VAL_SHIFT		15
#define PIN_VAL_MASK		(0x1 << PIN_VAL_SHIFT)
#define PIN_VAL(x)		(((x) & PIN_VAL_MASK) >> PIN_VAL_SHIFT)
#define PIN_VAL_LOW		(0 << PIN_VAL_SHIFT)
#define PIN_VAL_HIGH		(1 << PIN_VAL_SHIFT)

#define PIN_SLPM_PULL_SHIFT	16
#define PIN_SLPM_PULL_MASK	(0x7 << PIN_SLPM_PULL_SHIFT)
#define PIN_SLPM_PULL(x)	\
	(((x) & PIN_SLPM_PULL_MASK) >> PIN_SLPM_PULL_SHIFT)
#define PIN_SLPM_PULL_NONE	\
	((1 + NMK_GPIO_PULL_NONE) << PIN_SLPM_PULL_SHIFT)
#define PIN_SLPM_PULL_UP	\
	((1 + NMK_GPIO_PULL_UP) << PIN_SLPM_PULL_SHIFT)
#define PIN_SLPM_PULL_DOWN	\
	((1 + NMK_GPIO_PULL_DOWN) << PIN_SLPM_PULL_SHIFT)

#define PIN_SLPM_DIR_SHIFT	19
#define PIN_SLPM_DIR_MASK	(0x3 << PIN_SLPM_DIR_SHIFT)
#define PIN_SLPM_DIR(x)		\
	(((x) & PIN_SLPM_DIR_MASK) >> PIN_SLPM_DIR_SHIFT)
#define PIN_SLPM_DIR_INPUT	((1 + 0) << PIN_SLPM_DIR_SHIFT)
#define PIN_SLPM_DIR_OUTPUT	((1 + 1) << PIN_SLPM_DIR_SHIFT)

#define PIN_SLPM_VAL_SHIFT	21
#define PIN_SLPM_VAL_MASK	(0x3 << PIN_SLPM_VAL_SHIFT)
#define PIN_SLPM_VAL(x)		\
	(((x) & PIN_SLPM_VAL_MASK) >> PIN_SLPM_VAL_SHIFT)
#define PIN_SLPM_VAL_LOW	((1 + 0) << PIN_SLPM_VAL_SHIFT)
#define PIN_SLPM_VAL_HIGH	((1 + 1) << PIN_SLPM_VAL_SHIFT)

#define PIN_SLPM_PDIS_SHIFT		23
#define PIN_SLPM_PDIS_MASK		(0x3 << PIN_SLPM_PDIS_SHIFT)
#define PIN_SLPM_PDIS(x)	\
	(((x) & PIN_SLPM_PDIS_MASK) >> PIN_SLPM_PDIS_SHIFT)
#define PIN_SLPM_PDIS_NO_CHANGE		(0 << PIN_SLPM_PDIS_SHIFT)
#define PIN_SLPM_PDIS_DISABLED		(1 << PIN_SLPM_PDIS_SHIFT)
#define PIN_SLPM_PDIS_ENABLED		(2 << PIN_SLPM_PDIS_SHIFT)

#define PIN_LOWEMI_SHIFT	25
#define PIN_LOWEMI_MASK		(0x1 << PIN_LOWEMI_SHIFT)
#define PIN_LOWEMI(x)		(((x) & PIN_LOWEMI_MASK) >> PIN_LOWEMI_SHIFT)
#define PIN_LOWEMI_DISABLED	(0 << PIN_LOWEMI_SHIFT)
#define PIN_LOWEMI_ENABLED	(1 << PIN_LOWEMI_SHIFT)

#define PIN_GPIOMODE_SHIFT	26
#define PIN_GPIOMODE_MASK	(0x1 << PIN_GPIOMODE_SHIFT)
#define PIN_GPIOMODE(x)		(((x) & PIN_GPIOMODE_MASK) >> PIN_GPIOMODE_SHIFT)
#define PIN_GPIOMODE_DISABLED	(0 << PIN_GPIOMODE_SHIFT)
#define PIN_GPIOMODE_ENABLED	(1 << PIN_GPIOMODE_SHIFT)

#define PIN_SLEEPMODE_SHIFT	27
#define PIN_SLEEPMODE_MASK	(0x1 << PIN_SLEEPMODE_SHIFT)
#define PIN_SLEEPMODE(x)	(((x) & PIN_SLEEPMODE_MASK) >> PIN_SLEEPMODE_SHIFT)
#define PIN_SLEEPMODE_DISABLED	(0 << PIN_SLEEPMODE_SHIFT)
#define PIN_SLEEPMODE_ENABLED	(1 << PIN_SLEEPMODE_SHIFT)


/* Shortcuts.  Use these instead of separate DIR, PULL, and VAL.  */
#define PIN_INPUT_PULLDOWN	(PIN_DIR_INPUT | PIN_PULL_DOWN)
#define PIN_INPUT_PULLUP	(PIN_DIR_INPUT | PIN_PULL_UP)
#define PIN_INPUT_NOPULL	(PIN_DIR_INPUT | PIN_PULL_NONE)
#define PIN_OUTPUT_LOW		(PIN_DIR_OUTPUT | PIN_VAL_LOW)
#define PIN_OUTPUT_HIGH		(PIN_DIR_OUTPUT | PIN_VAL_HIGH)

#define PIN_SLPM_INPUT_PULLDOWN	(PIN_SLPM_DIR_INPUT | PIN_SLPM_PULL_DOWN)
#define PIN_SLPM_INPUT_PULLUP	(PIN_SLPM_DIR_INPUT | PIN_SLPM_PULL_UP)
#define PIN_SLPM_INPUT_NOPULL	(PIN_SLPM_DIR_INPUT | PIN_SLPM_PULL_NONE)
#define PIN_SLPM_OUTPUT_LOW	(PIN_SLPM_DIR_OUTPUT | PIN_SLPM_VAL_LOW)
#define PIN_SLPM_OUTPUT_HIGH	(PIN_SLPM_DIR_OUTPUT | PIN_SLPM_VAL_HIGH)

#define PIN_CFG_DEFAULT		(0)

#define PIN_CFG(num, alt)		\
	(PIN_CFG_DEFAULT |\
	 (PIN_NUM(num) | PIN_##alt))

#define PIN_CFG_INPUT(num, alt, pull)		\
	(PIN_CFG_DEFAULT |\
	 (PIN_NUM(num) | PIN_##alt | PIN_INPUT_##pull))

#define PIN_CFG_OUTPUT(num, alt, val)		\
	(PIN_CFG_DEFAULT |\
	 (PIN_NUM(num) | PIN_##alt | PIN_OUTPUT_##val))

/*
 * "nmk_gpio" and "NMK_GPIO" stand for "Nomadik GPIO", leaving
 * the "gpio" namespace for generic and cross-machine functions
 */

#define GPIO_BLOCK_SHIFT 5
#define NMK_GPIO_PER_CHIP (1 << GPIO_BLOCK_SHIFT)

/* Register in the logic block */
#define NMK_GPIO_DAT	0x00
#define NMK_GPIO_DATS	0x04
#define NMK_GPIO_DATC	0x08
#define NMK_GPIO_PDIS	0x0c
#define NMK_GPIO_DIR	0x10
#define NMK_GPIO_DIRS	0x14
#define NMK_GPIO_DIRC	0x18
#define NMK_GPIO_SLPC	0x1c
#define NMK_GPIO_AFSLA	0x20
#define NMK_GPIO_AFSLB	0x24
#define NMK_GPIO_LOWEMI	0x28

#define NMK_GPIO_RIMSC	0x40
#define NMK_GPIO_FIMSC	0x44
#define NMK_GPIO_IS	0x48
#define NMK_GPIO_IC	0x4c
#define NMK_GPIO_RWIMSC	0x50
#define NMK_GPIO_FWIMSC	0x54
#define NMK_GPIO_WKS	0x58
/* These appear in DB8540 and later ASICs */
#define NMK_GPIO_EDGELEVEL 0x5C
#define NMK_GPIO_LEVEL	0x60

/* Alternate functions: function C is set in hw by setting both A and B */
#define NMK_GPIO_ALT_GPIO	0
#define NMK_GPIO_ALT_A	1
#define NMK_GPIO_ALT_B	2
#define NMK_GPIO_ALT_C	(NMK_GPIO_ALT_A | NMK_GPIO_ALT_B)

#define NMK_GPIO_ALT_CX_SHIFT 2
#define NMK_GPIO_ALT_C1	((1<<NMK_GPIO_ALT_CX_SHIFT) | NMK_GPIO_ALT_C)
#define NMK_GPIO_ALT_C2	((2<<NMK_GPIO_ALT_CX_SHIFT) | NMK_GPIO_ALT_C)
#define NMK_GPIO_ALT_C3	((3<<NMK_GPIO_ALT_CX_SHIFT) | NMK_GPIO_ALT_C)
#define NMK_GPIO_ALT_C4	((4<<NMK_GPIO_ALT_CX_SHIFT) | NMK_GPIO_ALT_C)

/* Pull up/down values */
enum nmk_gpio_pull {
	NMK_GPIO_PULL_NONE,
	NMK_GPIO_PULL_UP,
	NMK_GPIO_PULL_DOWN,
};

/* Sleep mode */
enum nmk_gpio_slpm {
	NMK_GPIO_SLPM_INPUT,
	NMK_GPIO_SLPM_WAKEUP_ENABLE = NMK_GPIO_SLPM_INPUT,
	NMK_GPIO_SLPM_NOCHANGE,
	NMK_GPIO_SLPM_WAKEUP_DISABLE = NMK_GPIO_SLPM_NOCHANGE,
};

/*
 * Platform data to register a block: only the initial gpio/irq number.
 */
struct nmk_gpio_platform_data {
	char *name;
	int first_gpio;
	int first_irq;
	int num_gpio;
	u32 (*get_secondary_status)(unsigned int bank);
	void (*set_ioforce)(bool enable);
	bool supports_sleepmode;
};

#endif /* __PLAT_NOMADIK_GPIO */
OpenPOWER on IntegriCloud