]> git.karo-electronics.de Git - karo-tx-linux.git/blob - arch/arm/mach-omap2/mux.h
Merge remote-tracking branch 'usb-gadget/next'
[karo-tx-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 "mux2420.h"
11 #include "mux2430.h"
12 #include "mux34xx.h"
13
14 #define OMAP_MUX_TERMINATOR     0xffff
15
16 /* 34xx mux mode options for each pin. See TRM for options */
17 #define OMAP_MUX_MODE0      0
18 #define OMAP_MUX_MODE1      1
19 #define OMAP_MUX_MODE2      2
20 #define OMAP_MUX_MODE3      3
21 #define OMAP_MUX_MODE4      4
22 #define OMAP_MUX_MODE5      5
23 #define OMAP_MUX_MODE6      6
24 #define OMAP_MUX_MODE7      7
25
26 /* 24xx/34xx mux bit defines */
27 #define OMAP_PULL_ENA                   (1 << 3)
28 #define OMAP_PULL_UP                    (1 << 4)
29 #define OMAP_ALTELECTRICALSEL           (1 << 5)
30
31 /* omap3/4/5 specific mux bit defines */
32 #define OMAP_INPUT_EN                   (1 << 8)
33 #define OMAP_OFF_EN                     (1 << 9)
34 #define OMAP_OFFOUT_EN                  (1 << 10)
35 #define OMAP_OFFOUT_VAL                 (1 << 11)
36 #define OMAP_OFF_PULL_EN                (1 << 12)
37 #define OMAP_OFF_PULL_UP                (1 << 13)
38 #define OMAP_WAKEUP_EN                  (1 << 14)
39 #define OMAP_WAKEUP_EVENT               (1 << 15)
40
41 /* Active pin states */
42 #define OMAP_PIN_OUTPUT                 0
43 #define OMAP_PIN_INPUT                  OMAP_INPUT_EN
44 #define OMAP_PIN_INPUT_PULLUP           (OMAP_PULL_ENA | OMAP_INPUT_EN \
45                                                 | OMAP_PULL_UP)
46 #define OMAP_PIN_INPUT_PULLDOWN         (OMAP_PULL_ENA | OMAP_INPUT_EN)
47
48 /* Off mode states */
49 #define OMAP_PIN_OFF_NONE               0
50 #define OMAP_PIN_OFF_OUTPUT_HIGH        (OMAP_OFF_EN | OMAP_OFFOUT_EN \
51                                                 | OMAP_OFFOUT_VAL)
52 #define OMAP_PIN_OFF_OUTPUT_LOW         (OMAP_OFF_EN | OMAP_OFFOUT_EN)
53 #define OMAP_PIN_OFF_INPUT_PULLUP       (OMAP_OFF_EN | OMAP_OFF_PULL_EN \
54                                                 | OMAP_OFF_PULL_UP)
55 #define OMAP_PIN_OFF_INPUT_PULLDOWN     (OMAP_OFF_EN | OMAP_OFF_PULL_EN)
56 #define OMAP_PIN_OFF_WAKEUPENABLE       OMAP_WAKEUP_EN
57
58 #define OMAP_MODE_GPIO(partition, x)    (((x) & OMAP_MUX_MODE7) == \
59                                           partition->gpio)
60 #define OMAP_MODE_UART(x)       (((x) & OMAP_MUX_MODE7) == OMAP_MUX_MODE0)
61
62 /* Flags for omapX_mux_init */
63 #define OMAP_PACKAGE_MASK               0xffff
64 #define OMAP_PACKAGE_CBP                6               /* 515-pin 0.40 0.50 */
65 #define OMAP_PACKAGE_CUS                5               /* 423-pin 0.65 */
66 #define OMAP_PACKAGE_CBB                4               /* 515-pin 0.40 0.50 */
67 #define OMAP_PACKAGE_CBC                3               /* 515-pin 0.50 0.65 */
68 #define OMAP_PACKAGE_ZAC                2               /* 24xx 447-pin POP */
69 #define OMAP_PACKAGE_ZAF                1               /* 2420 447-pin SIP */
70
71
72 #define OMAP_MUX_NR_MODES               8               /* Available modes */
73 #define OMAP_MUX_NR_SIDES               2               /* Bottom & top */
74
75 /*
76  * omap_mux_init flags definition:
77  *
78  * OMAP_GPIO_MUX_MODE, bits 0-2: gpio muxing mode, same like pad control
79  *      register which includes values from 0-7.
80  * OMAP_MUX_REG_8BIT: Ensure that access to padconf is done in 8 bits.
81  * The default value is 16 bits.
82  */
83 #define OMAP_MUX_GPIO_IN_MODE0          OMAP_MUX_MODE0
84 #define OMAP_MUX_GPIO_IN_MODE1          OMAP_MUX_MODE1
85 #define OMAP_MUX_GPIO_IN_MODE2          OMAP_MUX_MODE2
86 #define OMAP_MUX_GPIO_IN_MODE3          OMAP_MUX_MODE3
87 #define OMAP_MUX_GPIO_IN_MODE4          OMAP_MUX_MODE4
88 #define OMAP_MUX_GPIO_IN_MODE5          OMAP_MUX_MODE5
89 #define OMAP_MUX_GPIO_IN_MODE6          OMAP_MUX_MODE6
90 #define OMAP_MUX_GPIO_IN_MODE7          OMAP_MUX_MODE7
91 #define OMAP_MUX_REG_8BIT               (1 << 3)
92
93 /**
94  * struct omap_board_data - board specific device data
95  * @id: instance id
96  * @flags: additional flags for platform init code
97  * @pads: array of device specific pads
98  * @pads_cnt: ARRAY_SIZE() of pads
99  */
100 struct omap_board_data {
101         int                     id;
102         u32                     flags;
103         struct omap_device_pad  *pads;
104         int                     pads_cnt;
105 };
106
107 /**
108  * struct mux_partition - contain partition related information
109  * @name: name of the current partition
110  * @flags: flags specific to this partition
111  * @gpio: gpio mux mode
112  * @phys: physical address
113  * @size: partition size
114  * @base: virtual address after ioremap
115  * @muxmodes: list of nodes that belong to a partition
116  * @node: list node for the partitions linked list
117  */
118 struct omap_mux_partition {
119         const char              *name;
120         u32                     flags;
121         u32                     gpio;
122         u32                     phys;
123         u32                     size;
124         void __iomem            *base;
125         struct list_head        muxmodes;
126         struct list_head        node;
127 };
128
129 /**
130  * struct omap_mux - data for omap mux register offset and it's value
131  * @reg_offset: mux register offset from the mux base
132  * @gpio:       GPIO number
133  * @muxnames:   available signal modes for a ball
134  * @balls:      available balls on the package
135  */
136 struct omap_mux {
137         u16     reg_offset;
138         u16     gpio;
139 #ifdef CONFIG_OMAP_MUX
140         char    *muxnames[OMAP_MUX_NR_MODES];
141 #ifdef CONFIG_DEBUG_FS
142         char    *balls[OMAP_MUX_NR_SIDES];
143 #endif
144 #endif
145 };
146
147 /**
148  * struct omap_ball - data for balls on omap package
149  * @reg_offset: mux register offset from the mux base
150  * @balls:      available balls on the package
151  */
152 struct omap_ball {
153         u16     reg_offset;
154         char    *balls[OMAP_MUX_NR_SIDES];
155 };
156
157 /**
158  * struct omap_board_mux - data for initializing mux registers
159  * @reg_offset: mux register offset from the mux base
160  * @mux_value:  desired mux value to set
161  */
162 struct omap_board_mux {
163         u16     reg_offset;
164         u16     value;
165 };
166
167 #define OMAP_DEVICE_PAD_REMUX           BIT(1)  /* Dynamically remux a pad,
168                                                    needs enable, idle and off
169                                                    values */
170 #define OMAP_DEVICE_PAD_WAKEUP          BIT(0)  /* Pad is wake-up capable */
171
172 /**
173  * struct omap_device_pad - device specific pad configuration
174  * @name:               signal name
175  * @flags:              pad specific runtime flags
176  * @enable:             runtime value for a pad
177  * @idle:               idle value for a pad
178  * @off:                off value for a pad, defaults to safe mode
179  * @partition:          mux partition
180  * @mux:                mux register
181  */
182 struct omap_device_pad {
183         char                            *name;
184         u8                              flags;
185         u16                             enable;
186         u16                             idle;
187         u16                             off;
188         struct omap_mux_partition       *partition;
189         struct omap_mux                 *mux;
190 };
191
192 struct omap_hwmod_mux_info;
193
194 #define OMAP_MUX_STATIC(signal, mode)                                   \
195 {                                                                       \
196         .name   = (signal),                                             \
197         .enable = (mode),                                               \
198 }
199
200 #if defined(CONFIG_OMAP_MUX)
201
202 /**
203  * omap_mux_init_gpio - initialize a signal based on the GPIO number
204  * @gpio:               GPIO number
205  * @val:                Options for the mux register value
206  */
207 int omap_mux_init_gpio(int gpio, int val);
208
209 /**
210  * omap_mux_init_signal - initialize a signal based on the signal name
211  * @muxname:            Mux name in mode0_name.signal_name format
212  * @val:                Options for the mux register value
213  */
214 int omap_mux_init_signal(const char *muxname, int val);
215
216 /**
217  * omap_hwmod_mux_init - initialize hwmod specific mux data
218  * @bpads:              Board specific device signal names
219  * @nr_pads:            Number of signal names for the device
220  */
221 extern struct omap_hwmod_mux_info *
222 omap_hwmod_mux_init(struct omap_device_pad *bpads, int nr_pads);
223
224 /**
225  * omap_hwmod_mux - omap hwmod specific pin muxing
226  * @hmux:               Pads for a hwmod
227  * @state:              Desired _HWMOD_STATE
228  *
229  * Called only from omap_hwmod.c, do not use.
230  */
231 void omap_hwmod_mux(struct omap_hwmod_mux_info *hmux, u8 state);
232
233 int omap_mux_get_by_name(const char *muxname,
234                 struct omap_mux_partition **found_partition,
235                 struct omap_mux **found_mux);
236 #else
237
238 static inline int omap_mux_get_by_name(const char *muxname,
239                 struct omap_mux_partition **found_partition,
240                 struct omap_mux **found_mux)
241 {
242         return 0;
243 }
244
245 static inline int omap_mux_init_gpio(int gpio, int val)
246 {
247         return 0;
248 }
249 static inline int omap_mux_init_signal(char *muxname, int val)
250 {
251         return 0;
252 }
253
254 static inline struct omap_hwmod_mux_info *
255 omap_hwmod_mux_init(struct omap_device_pad *bpads, int nr_pads)
256 {
257         return NULL;
258 }
259
260 static inline void omap_hwmod_mux(struct omap_hwmod_mux_info *hmux, u8 state)
261 {
262 }
263
264 static struct omap_board_mux *board_mux __maybe_unused;
265
266 #endif
267
268 /**
269  * omap_mux_get_gpio() - get mux register value based on GPIO number
270  * @gpio:               GPIO number
271  *
272  */
273 u16 omap_mux_get_gpio(int gpio);
274
275 /**
276  * omap_mux_set_gpio() - set mux register value based on GPIO number
277  * @val:                New mux register value
278  * @gpio:               GPIO number
279  *
280  */
281 void omap_mux_set_gpio(u16 val, int gpio);
282
283 /**
284  * omap_mux_get() - get a mux partition by name
285  * @name:               Name of the mux partition
286  *
287  */
288 struct omap_mux_partition *omap_mux_get(const char *name);
289
290 /**
291  * omap_mux_read() - read mux register
292  * @partition:          Mux partition
293  * @mux_offset:         Offset of the mux register
294  *
295  */
296 u16 omap_mux_read(struct omap_mux_partition *p, u16 mux_offset);
297
298 /**
299  * omap_mux_write() - write mux register
300  * @partition:          Mux partition
301  * @val:                New mux register value
302  * @mux_offset:         Offset of the mux register
303  *
304  * This should be only needed for dynamic remuxing of non-gpio signals.
305  */
306 void omap_mux_write(struct omap_mux_partition *p, u16 val, u16 mux_offset);
307
308 /**
309  * omap_mux_write_array() - write an array of mux registers
310  * @partition:          Mux partition
311  * @board_mux:          Array of mux registers terminated by MAP_MUX_TERMINATOR
312  *
313  * This should be only needed for dynamic remuxing of non-gpio signals.
314  */
315 void omap_mux_write_array(struct omap_mux_partition *p,
316                           struct omap_board_mux *board_mux);
317
318 /**
319  * omap2420_mux_init() - initialize mux system with board specific set
320  * @board_mux:          Board specific mux table
321  * @flags:              OMAP package type used for the board
322  */
323 int omap2420_mux_init(struct omap_board_mux *board_mux, int flags);
324
325 /**
326  * omap2430_mux_init() - initialize mux system with board specific set
327  * @board_mux:          Board specific mux table
328  * @flags:              OMAP package type used for the board
329  */
330 int omap2430_mux_init(struct omap_board_mux *board_mux, int flags);
331
332 /**
333  * omap3_mux_init() - initialize mux system with board specific set
334  * @board_mux:          Board specific mux table
335  * @flags:              OMAP package type used for the board
336  */
337 int omap3_mux_init(struct omap_board_mux *board_mux, int flags);
338
339 /**
340  * omap4_mux_init() - initialize mux system with board specific set
341  * @board_subset:       Board specific mux table
342  * @board_wkup_subset:  Board specific mux table for wakeup instance
343  * @flags:              OMAP package type used for the board
344  */
345 int omap4_mux_init(struct omap_board_mux *board_subset,
346         struct omap_board_mux *board_wkup_subset, int flags);
347
348 /**
349  * omap_mux_init - private mux init function, do not call
350  */
351 int omap_mux_init(const char *name, u32 flags,
352                   u32 mux_pbase, u32 mux_size,
353                   struct omap_mux *superset,
354                   struct omap_mux *package_subset,
355                   struct omap_board_mux *board_mux,
356                   struct omap_ball *package_balls);
357