aboutsummaryrefslogtreecommitdiff
path: root/arch/arm/mach-omap2/mux.h
blob: fdb22f14021fd87c015f9291b43adee959def5de (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
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
/*
 * Copyright (C) 2009 Nokia
 * Copyright (C) 2009-2010 Texas Instruments
 *
 * 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.
 */

#include "mux2420.h"
#include "mux2430.h"
#include "mux34xx.h"
#include "mux44xx.h"

#define OMAP_MUX_TERMINATOR	0xffff

/* 34xx mux mode options for each pin. See TRM for options */
#define OMAP_MUX_MODE0      0
#define OMAP_MUX_MODE1      1
#define OMAP_MUX_MODE2      2
#define OMAP_MUX_MODE3      3
#define OMAP_MUX_MODE4      4
#define OMAP_MUX_MODE5      5
#define OMAP_MUX_MODE6      6
#define OMAP_MUX_MODE7      7

/* 24xx/34xx mux bit defines */
#define OMAP_PULL_ENA			(1 << 3)
#define OMAP_PULL_UP			(1 << 4)
#define OMAP_ALTELECTRICALSEL		(1 << 5)

/* 34xx specific mux bit defines */
#define OMAP_INPUT_EN			(1 << 8)
#define OMAP_OFF_EN			(1 << 9)
#define OMAP_OFFOUT_EN			(1 << 10)
#define OMAP_OFFOUT_VAL			(1 << 11)
#define OMAP_OFF_PULL_EN		(1 << 12)
#define OMAP_OFF_PULL_UP		(1 << 13)
#define OMAP_WAKEUP_EN			(1 << 14)

/* 44xx specific mux bit defines */
#define OMAP_WAKEUP_EVENT		(1 << 15)

/* Active pin states */
#define OMAP_PIN_OUTPUT			0
#define OMAP_PIN_INPUT			OMAP_INPUT_EN
#define OMAP_PIN_INPUT_PULLUP		(OMAP_PULL_ENA | OMAP_INPUT_EN \
						| OMAP_PULL_UP)
#define OMAP_PIN_INPUT_PULLDOWN		(OMAP_PULL_ENA | OMAP_INPUT_EN)

/* Off mode states */
#define OMAP_PIN_OFF_NONE		0
#define OMAP_PIN_OFF_OUTPUT_HIGH	(OMAP_OFF_EN | OMAP_OFFOUT_EN \
						| OMAP_OFFOUT_VAL)
#define OMAP_PIN_OFF_OUTPUT_LOW		(OMAP_OFF_EN | OMAP_OFFOUT_EN)
#define OMAP_PIN_OFF_INPUT_PULLUP	(OMAP_OFF_EN | OMAP_OFF_PULL_EN \
						| OMAP_OFF_PULL_UP)
#define OMAP_PIN_OFF_INPUT_PULLDOWN	(OMAP_OFF_EN | OMAP_OFF_PULL_EN)
#define OMAP_PIN_OFF_WAKEUPENABLE	OMAP_WAKEUP_EN

#define OMAP_MODE_GPIO(partition, x)	(((x) & OMAP_MUX_MODE7) == \
					  partition->gpio)
#define OMAP_MODE_UART(x)	(((x) & OMAP_MUX_MODE7) == OMAP_MUX_MODE0)

/* Flags for omapX_mux_init */
#define OMAP_PACKAGE_MASK		0xffff
#define OMAP_PACKAGE_CBS		8		/* 547-pin 0.40 0.40 */
#define OMAP_PACKAGE_CBL		7		/* 547-pin 0.40 0.40 */
#define OMAP_PACKAGE_CBP		6		/* 515-pin 0.40 0.50 */
#define OMAP_PACKAGE_CUS		5		/* 423-pin 0.65 */
#define OMAP_PACKAGE_CBB		4		/* 515-pin 0.40 0.50 */
#define OMAP_PACKAGE_CBC		3		/* 515-pin 0.50 0.65 */
#define OMAP_PACKAGE_ZAC		2		/* 24xx 447-pin POP */
#define OMAP_PACKAGE_ZAF		1		/* 2420 447-pin SIP */


#define OMAP_MUX_NR_MODES		8		/* Available modes */
#define OMAP_MUX_NR_SIDES		2		/* Bottom & top */

/*
 * omap_mux_init flags definition:
 *
 * OMAP_GPIO_MUX_MODE, bits 0-2: gpio muxing mode, same like pad control
 *      register which includes values from 0-7.
 * OMAP_MUX_REG_8BIT: Ensure that access to padconf is done in 8 bits.
 * The default value is 16 bits.
 */
#define OMAP_MUX_GPIO_IN_MODE0		OMAP_MUX_MODE0
#define OMAP_MUX_GPIO_IN_MODE1		OMAP_MUX_MODE1
#define OMAP_MUX_GPIO_IN_MODE2		OMAP_MUX_MODE2
#define OMAP_MUX_GPIO_IN_MODE3		OMAP_MUX_MODE3
#define OMAP_MUX_GPIO_IN_MODE4		OMAP_MUX_MODE4
#define OMAP_MUX_GPIO_IN_MODE5		OMAP_MUX_MODE5
#define OMAP_MUX_GPIO_IN_MODE6		OMAP_MUX_MODE6
#define OMAP_MUX_GPIO_IN_MODE7		OMAP_MUX_MODE7
#define OMAP_MUX_REG_8BIT		(1 << 3)

/**
 * struct omap_board_data - board specific device data
 * @id: instance id
 * @flags: additional flags for platform init code
 * @pads: array of device specific pads
 * @pads_cnt: ARRAY_SIZE() of pads
 */
struct omap_board_data {
	int			id;
	u32			flags;
	struct omap_device_pad	*pads;
	int			pads_cnt;
};

/**
 * struct mux_partition - contain partition related information
 * @name: name of the current partition
 * @flags: flags specific to this partition
 * @gpio: gpio mux mode
 * @phys: physical address
 * @size: partition size
 * @base: virtual address after ioremap
 * @muxmodes: list of nodes that belong to a partition
 * @node: list node for the partitions linked list
 */
struct omap_mux_partition {
	const char		*name;
	u32			flags;
	u32			gpio;
	u32			phys;
	u32			size;
	void __iomem		*base;
	struct list_head	muxmodes;
	struct list_head	node;
};

/**
 * struct omap_mux - data for omap mux register offset and it's value
 * @reg_offset:	mux register offset from the mux base
 * @gpio:	GPIO number
 * @muxnames:	available signal modes for a ball
 * @balls:	available balls on the package
 */
struct omap_mux {
	u16	reg_offset;
	u16	gpio;
#ifdef CONFIG_OMAP_MUX
	char	*muxnames[OMAP_MUX_NR_MODES];
#ifdef CONFIG_DEBUG_FS
	char	*balls[OMAP_MUX_NR_SIDES];
#endif
#endif
};

/**
 * struct omap_ball - data for balls on omap package
 * @reg_offset:	mux register offset from the mux base
 * @balls:	available balls on the package
 */
struct omap_ball {
	u16	reg_offset;
	char	*balls[OMAP_MUX_NR_SIDES];
};

/**
 * struct omap_board_mux - data for initializing mux registers
 * @reg_offset:	mux register offset from the mux base
 * @mux_value:	desired mux value to set
 */
struct omap_board_mux {
	u16	reg_offset;
	u16	value;
};

#define OMAP_DEVICE_PAD_REMUX		BIT(1)	/* Dynamically remux a pad,
						   needs enable, idle and off
						   values */
#define OMAP_DEVICE_PAD_WAKEUP		BIT(0)	/* Pad is wake-up capable */

/**
 * struct omap_device_pad - device specific pad configuration
 * @name:		signal name
 * @flags:		pad specific runtime flags
 * @enable:		runtime value for a pad
 * @idle:		idle value for a pad
 * @off:		off value for a pad, defaults to safe mode
 * @partition:		mux partition
 * @mux:		mux register
 */
struct omap_device_pad {
	char				*name;
	u8				flags;
	u16				enable;
	u16				idle;
	u16				off;
	struct omap_mux_partition	*partition;
	struct omap_mux			*mux;
};

struct omap_hwmod_mux_info;

#define OMAP_MUX_STATIC(signal, mode)					\
{									\
	.name	= (signal),						\
	.enable	= (mode),						\
}

#if defined(CONFIG_OMAP_MUX)

/**
 * omap_mux_init_gpio - initialize a signal based on the GPIO number
 * @gpio:		GPIO number
 * @val:		Options for the mux register value
 */
int omap_mux_init_gpio(int gpio, int val);

/**
 * omap_mux_init_signal - initialize a signal based on the signal name
 * @muxname:		Mux name in mode0_name.signal_name format
 * @val:		Options for the mux register value
 */
int omap_mux_init_signal(const char *muxname, int val);

/**
 * omap_hwmod_mux_init - initialize hwmod specific mux data
 * @bpads:		Board specific device signal names
 * @nr_pads:		Number of signal names for the device
 */
extern struct omap_hwmod_mux_info *
omap_hwmod_mux_init(struct omap_device_pad *bpads, int nr_pads);

/**
 * omap_hwmod_mux - omap hwmod specific pin muxing
 * @hmux:		Pads for a hwmod
 * @state:		Desired _HWMOD_STATE
 *
 * Called only from omap_hwmod.c, do not use.
 */
void omap_hwmod_mux(struct omap_hwmod_mux_info *hmux, u8 state);

int omap_mux_get_by_name(const char *muxname,
		struct omap_mux_partition **found_partition,
		struct omap_mux **found_mux);
#else

static inline int omap_mux_get_by_name(const char *muxname,
		struct omap_mux_partition **found_partition,
		struct omap_mux **found_mux)
{
	return 0;
}

static inline int omap_mux_init_gpio(int gpio, int val)
{
	return 0;
}
static inline int omap_mux_init_signal(char *muxname, int val)
{
	return 0;
}

static inline struct omap_hwmod_mux_info *
omap_hwmod_mux_init(struct omap_device_pad *bpads, int nr_pads)
{
	return NULL;
}

static inline void omap_hwmod_mux(struct omap_hwmod_mux_info *hmux, u8 state)
{
}

static struct omap_board_mux *board_mux __maybe_unused;

#endif

/**
 * omap_mux_get_gpio() - get mux register value based on GPIO number
 * @gpio:		GPIO number
 *
 */
u16 omap_mux_get_gpio(int gpio);

/**
 * omap_mux_set_gpio() - set mux register value based on GPIO number
 * @val:		New mux register value
 * @gpio:		GPIO number
 *
 */
void omap_mux_set_gpio(u16 val, int gpio);

/**
 * omap_mux_get() - get a mux partition by name
 * @name:		Name of the mux partition
 *
 */
struct omap_mux_partition *omap_mux_get(const char *name);

/**
 * omap_mux_read() - read mux register
 * @partition:		Mux partition
 * @mux_offset:		Offset of the mux register
 *
 */
u16 omap_mux_read(struct omap_mux_partition *p, u16 mux_offset);

/**
 * omap_mux_write() - write mux register
 * @partition:		Mux partition
 * @val:		New mux register value
 * @mux_offset:		Offset of the mux register
 *
 * This should be only needed for dynamic remuxing of non-gpio signals.
 */
void omap_mux_write(struct omap_mux_partition *p, u16 val, u16 mux_offset);

/**
 * omap_mux_write_array() - write an array of mux registers
 * @partition:		Mux partition
 * @board_mux:		Array of mux registers terminated by MAP_MUX_TERMINATOR
 *
 * This should be only needed for dynamic remuxing of non-gpio signals.
 */
void omap_mux_write_array(struct omap_mux_partition *p,
			  struct omap_board_mux *board_mux);

/**
 * omap2420_mux_init() - initialize mux system with board specific set
 * @board_mux:		Board specific mux table
 * @flags:		OMAP package type used for the board
 */
int omap2420_mux_init(struct omap_board_mux *board_mux, int flags);

/**
 * omap2430_mux_init() - initialize mux system with board specific set
 * @board_mux:		Board specific mux table
 * @flags:		OMAP package type used for the board
 */
int omap2430_mux_init(struct omap_board_mux *board_mux, int flags);

/**
 * omap3_mux_init() - initialize mux system with board specific set
 * @board_mux:		Board specific mux table
 * @flags:		OMAP package type used for the board
 */
int omap3_mux_init(struct omap_board_mux *board_mux, int flags);

/**
 * omap4_mux_init() - initialize mux system with board specific set
 * @board_subset:	Board specific mux table
 * @board_wkup_subset:	Board specific mux table for wakeup instance
 * @flags:		OMAP package type used for the board
 */
int omap4_mux_init(struct omap_board_mux *board_subset,
	struct omap_board_mux *board_wkup_subset, int flags);

/**
 * omap_mux_init - private mux init function, do not call
 */
int omap_mux_init(const char *name, u32 flags,
		  u32 mux_pbase, u32 mux_size,
		  struct omap_mux *superset,
		  struct omap_mux *package_subset,
		  struct omap_board_mux *board_mux,
		  struct omap_ball *package_balls);