Merge branch 'smack-for-3.16' of git://git.gitorious.org/smack-next/kernel into next
[cascardo/linux.git] / arch / arm / mach-omap2 / mux.h
1 /*
2  * Copyright (C) 2009 Nokia
3  * Copyright (C) 2009-2010 Texas Instruments
4  *
5  * This program is free software; you can redistribute it and/or modify
6  * it under the terms of the GNU General Public License version 2 as
7  * published by the Free Software Foundation.
8  */
9
10 #include "mux34xx.h"
11
12 #define OMAP_MUX_TERMINATOR     0xffff
13
14 /* 34xx mux mode options for each pin. See TRM for options */
15 #define OMAP_MUX_MODE0      0
16 #define OMAP_MUX_MODE1      1
17 #define OMAP_MUX_MODE2      2
18 #define OMAP_MUX_MODE3      3
19 #define OMAP_MUX_MODE4      4
20 #define OMAP_MUX_MODE5      5
21 #define OMAP_MUX_MODE6      6
22 #define OMAP_MUX_MODE7      7
23
24 /* 24xx/34xx mux bit defines */
25 #define OMAP_PULL_ENA                   (1 << 3)
26 #define OMAP_PULL_UP                    (1 << 4)
27 #define OMAP_ALTELECTRICALSEL           (1 << 5)
28
29 /* omap3/4/5 specific mux bit defines */
30 #define OMAP_INPUT_EN                   (1 << 8)
31 #define OMAP_OFF_EN                     (1 << 9)
32 #define OMAP_OFFOUT_EN                  (1 << 10)
33 #define OMAP_OFFOUT_VAL                 (1 << 11)
34 #define OMAP_OFF_PULL_EN                (1 << 12)
35 #define OMAP_OFF_PULL_UP                (1 << 13)
36 #define OMAP_WAKEUP_EN                  (1 << 14)
37 #define OMAP_WAKEUP_EVENT               (1 << 15)
38
39 /* Active pin states */
40 #define OMAP_PIN_OUTPUT                 0
41 #define OMAP_PIN_INPUT                  OMAP_INPUT_EN
42 #define OMAP_PIN_INPUT_PULLUP           (OMAP_PULL_ENA | OMAP_INPUT_EN \
43                                                 | OMAP_PULL_UP)
44 #define OMAP_PIN_INPUT_PULLDOWN         (OMAP_PULL_ENA | OMAP_INPUT_EN)
45
46 /* Off mode states */
47 #define OMAP_PIN_OFF_NONE               0
48 #define OMAP_PIN_OFF_OUTPUT_HIGH        (OMAP_OFF_EN | OMAP_OFFOUT_EN \
49                                                 | OMAP_OFFOUT_VAL)
50 #define OMAP_PIN_OFF_OUTPUT_LOW         (OMAP_OFF_EN | OMAP_OFFOUT_EN)
51 #define OMAP_PIN_OFF_INPUT_PULLUP       (OMAP_OFF_EN | OMAP_OFF_PULL_EN \
52                                                 | OMAP_OFF_PULL_UP)
53 #define OMAP_PIN_OFF_INPUT_PULLDOWN     (OMAP_OFF_EN | OMAP_OFF_PULL_EN)
54 #define OMAP_PIN_OFF_WAKEUPENABLE       OMAP_WAKEUP_EN
55
56 #define OMAP_MODE_GPIO(partition, x)    (((x) & OMAP_MUX_MODE7) == \
57                                           partition->gpio)
58 #define OMAP_MODE_UART(x)       (((x) & OMAP_MUX_MODE7) == OMAP_MUX_MODE0)
59
60 /* Flags for omapX_mux_init */
61 #define OMAP_PACKAGE_MASK               0xffff
62 #define OMAP_PACKAGE_CBP                6               /* 515-pin 0.40 0.50 */
63 #define OMAP_PACKAGE_CUS                5               /* 423-pin 0.65 */
64 #define OMAP_PACKAGE_CBB                4               /* 515-pin 0.40 0.50 */
65 #define OMAP_PACKAGE_CBC                3               /* 515-pin 0.50 0.65 */
66 #define OMAP_PACKAGE_ZAC                2               /* 24xx 447-pin POP */
67 #define OMAP_PACKAGE_ZAF                1               /* 2420 447-pin SIP */
68
69
70 #define OMAP_MUX_NR_MODES               8               /* Available modes */
71 #define OMAP_MUX_NR_SIDES               2               /* Bottom & top */
72
73 /*
74  * omap_mux_init flags definition:
75  *
76  * OMAP_GPIO_MUX_MODE, bits 0-2: gpio muxing mode, same like pad control
77  *      register which includes values from 0-7.
78  * OMAP_MUX_REG_8BIT: Ensure that access to padconf is done in 8 bits.
79  * The default value is 16 bits.
80  */
81 #define OMAP_MUX_GPIO_IN_MODE0          OMAP_MUX_MODE0
82 #define OMAP_MUX_GPIO_IN_MODE1          OMAP_MUX_MODE1
83 #define OMAP_MUX_GPIO_IN_MODE2          OMAP_MUX_MODE2
84 #define OMAP_MUX_GPIO_IN_MODE3          OMAP_MUX_MODE3
85 #define OMAP_MUX_GPIO_IN_MODE4          OMAP_MUX_MODE4
86 #define OMAP_MUX_GPIO_IN_MODE5          OMAP_MUX_MODE5
87 #define OMAP_MUX_GPIO_IN_MODE6          OMAP_MUX_MODE6
88 #define OMAP_MUX_GPIO_IN_MODE7          OMAP_MUX_MODE7
89 #define OMAP_MUX_REG_8BIT               (1 << 3)
90
91 /**
92  * struct omap_board_data - board specific device data
93  * @id: instance id
94  * @flags: additional flags for platform init code
95  * @pads: array of device specific pads
96  * @pads_cnt: ARRAY_SIZE() of pads
97  */
98 struct omap_board_data {
99         int                     id;
100         u32                     flags;
101         struct omap_device_pad  *pads;
102         int                     pads_cnt;
103 };
104
105 /**
106  * struct mux_partition - contain partition related information
107  * @name: name of the current partition
108  * @flags: flags specific to this partition
109  * @gpio: gpio mux mode
110  * @phys: physical address
111  * @size: partition size
112  * @base: virtual address after ioremap
113  * @muxmodes: list of nodes that belong to a partition
114  * @node: list node for the partitions linked list
115  */
116 struct omap_mux_partition {
117         const char              *name;
118         u32                     flags;
119         u32                     gpio;
120         u32                     phys;
121         u32                     size;
122         void __iomem            *base;
123         struct list_head        muxmodes;
124         struct list_head        node;
125 };
126
127 /**
128  * struct omap_mux - data for omap mux register offset and it's value
129  * @reg_offset: mux register offset from the mux base
130  * @gpio:       GPIO number
131  * @muxnames:   available signal modes for a ball
132  * @balls:      available balls on the package
133  */
134 struct omap_mux {
135         u16     reg_offset;
136         u16     gpio;
137 #ifdef CONFIG_OMAP_MUX
138         char    *muxnames[OMAP_MUX_NR_MODES];
139 #ifdef CONFIG_DEBUG_FS
140         char    *balls[OMAP_MUX_NR_SIDES];
141 #endif
142 #endif
143 };
144
145 /**
146  * struct omap_ball - data for balls on omap package
147  * @reg_offset: mux register offset from the mux base
148  * @balls:      available balls on the package
149  */
150 struct omap_ball {
151         u16     reg_offset;
152         char    *balls[OMAP_MUX_NR_SIDES];
153 };
154
155 /**
156  * struct omap_board_mux - data for initializing mux registers
157  * @reg_offset: mux register offset from the mux base
158  * @mux_value:  desired mux value to set
159  */
160 struct omap_board_mux {
161         u16     reg_offset;
162         u16     value;
163 };
164
165 #define OMAP_DEVICE_PAD_REMUX           BIT(1)  /* Dynamically remux a pad,
166                                                    needs enable, idle and off
167                                                    values */
168 #define OMAP_DEVICE_PAD_WAKEUP          BIT(0)  /* Pad is wake-up capable */
169
170 /**
171  * struct omap_device_pad - device specific pad configuration
172  * @name:               signal name
173  * @flags:              pad specific runtime flags
174  * @enable:             runtime value for a pad
175  * @idle:               idle value for a pad
176  * @off:                off value for a pad, defaults to safe mode
177  * @partition:          mux partition
178  * @mux:                mux register
179  */
180 struct omap_device_pad {
181         char                            *name;
182         u8                              flags;
183         u16                             enable;
184         u16                             idle;
185         u16                             off;
186         struct omap_mux_partition       *partition;
187         struct omap_mux                 *mux;
188 };
189
190 struct omap_hwmod_mux_info;
191
192 #define OMAP_MUX_STATIC(signal, mode)                                   \
193 {                                                                       \
194         .name   = (signal),                                             \
195         .enable = (mode),                                               \
196 }
197
198 #if defined(CONFIG_OMAP_MUX)
199
200 /**
201  * omap_mux_init_gpio - initialize a signal based on the GPIO number
202  * @gpio:               GPIO number
203  * @val:                Options for the mux register value
204  */
205 int omap_mux_init_gpio(int gpio, int val);
206
207 /**
208  * omap_mux_init_signal - initialize a signal based on the signal name
209  * @muxname:            Mux name in mode0_name.signal_name format
210  * @val:                Options for the mux register value
211  */
212 int omap_mux_init_signal(const char *muxname, int val);
213
214 /**
215  * omap_hwmod_mux_init - initialize hwmod specific mux data
216  * @bpads:              Board specific device signal names
217  * @nr_pads:            Number of signal names for the device
218  */
219 extern struct omap_hwmod_mux_info *
220 omap_hwmod_mux_init(struct omap_device_pad *bpads, int nr_pads);
221
222 /**
223  * omap_hwmod_mux - omap hwmod specific pin muxing
224  * @hmux:               Pads for a hwmod
225  * @state:              Desired _HWMOD_STATE
226  *
227  * Called only from omap_hwmod.c, do not use.
228  */
229 void omap_hwmod_mux(struct omap_hwmod_mux_info *hmux, u8 state);
230
231 int omap_mux_get_by_name(const char *muxname,
232                 struct omap_mux_partition **found_partition,
233                 struct omap_mux **found_mux);
234 #else
235
236 static inline int omap_mux_get_by_name(const char *muxname,
237                 struct omap_mux_partition **found_partition,
238                 struct omap_mux **found_mux)
239 {
240         return 0;
241 }
242
243 static inline int omap_mux_init_gpio(int gpio, int val)
244 {
245         return 0;
246 }
247 static inline int omap_mux_init_signal(char *muxname, int val)
248 {
249         return 0;
250 }
251
252 static inline struct omap_hwmod_mux_info *
253 omap_hwmod_mux_init(struct omap_device_pad *bpads, int nr_pads)
254 {
255         return NULL;
256 }
257
258 static inline void omap_hwmod_mux(struct omap_hwmod_mux_info *hmux, u8 state)
259 {
260 }
261
262 static struct omap_board_mux *board_mux __maybe_unused;
263
264 #endif
265
266 /**
267  * omap_mux_get_gpio() - get mux register value based on GPIO number
268  * @gpio:               GPIO number
269  *
270  */
271 u16 omap_mux_get_gpio(int gpio);
272
273 /**
274  * omap_mux_set_gpio() - set mux register value based on GPIO number
275  * @val:                New mux register value
276  * @gpio:               GPIO number
277  *
278  */
279 void omap_mux_set_gpio(u16 val, int gpio);
280
281 /**
282  * omap_mux_get() - get a mux partition by name
283  * @name:               Name of the mux partition
284  *
285  */
286 struct omap_mux_partition *omap_mux_get(const char *name);
287
288 /**
289  * omap_mux_read() - read mux register
290  * @partition:          Mux partition
291  * @mux_offset:         Offset of the mux register
292  *
293  */
294 u16 omap_mux_read(struct omap_mux_partition *p, u16 mux_offset);
295
296 /**
297  * omap_mux_write() - write mux register
298  * @partition:          Mux partition
299  * @val:                New mux register value
300  * @mux_offset:         Offset of the mux register
301  *
302  * This should be only needed for dynamic remuxing of non-gpio signals.
303  */
304 void omap_mux_write(struct omap_mux_partition *p, u16 val, u16 mux_offset);
305
306 /**
307  * omap_mux_write_array() - write an array of mux registers
308  * @partition:          Mux partition
309  * @board_mux:          Array of mux registers terminated by MAP_MUX_TERMINATOR
310  *
311  * This should be only needed for dynamic remuxing of non-gpio signals.
312  */
313 void omap_mux_write_array(struct omap_mux_partition *p,
314                           struct omap_board_mux *board_mux);
315
316 /**
317  * omap2420_mux_init() - initialize mux system with board specific set
318  * @board_mux:          Board specific mux table
319  * @flags:              OMAP package type used for the board
320  */
321 int omap2420_mux_init(struct omap_board_mux *board_mux, int flags);
322
323 /**
324  * omap2430_mux_init() - initialize mux system with board specific set
325  * @board_mux:          Board specific mux table
326  * @flags:              OMAP package type used for the board
327  */
328 int omap2430_mux_init(struct omap_board_mux *board_mux, int flags);
329
330 /**
331  * omap3_mux_init() - initialize mux system with board specific set
332  * @board_mux:          Board specific mux table
333  * @flags:              OMAP package type used for the board
334  */
335 int omap3_mux_init(struct omap_board_mux *board_mux, int flags);
336
337 /**
338  * omap4_mux_init() - initialize mux system with board specific set
339  * @board_subset:       Board specific mux table
340  * @board_wkup_subset:  Board specific mux table for wakeup instance
341  * @flags:              OMAP package type used for the board
342  */
343 int omap4_mux_init(struct omap_board_mux *board_subset,
344         struct omap_board_mux *board_wkup_subset, int flags);
345
346 /**
347  * omap_mux_init - private mux init function, do not call
348  */
349 int omap_mux_init(const char *name, u32 flags,
350                   u32 mux_pbase, u32 mux_size,
351                   struct omap_mux *superset,
352                   struct omap_mux *package_subset,
353                   struct omap_board_mux *board_mux,
354                   struct omap_ball *package_balls);
355