Linux Kernel  3.7.1
 All Data Structures Namespaces Files Functions Variables Typedefs Enumerations Enumerator Macros Groups Pages
mfp.h
Go to the documentation of this file.
1 /*
2  * arch/arm/plat-pxa/include/plat/mfp.h
3  *
4  * Common Multi-Function Pin Definitions
5  *
6  * Copyright (C) 2007 Marvell International Ltd.
7  *
8  * 2007-8-21: eric miao <[email protected]>
9  * initial version
10  *
11  * This program is free software; you can redistribute it and/or modify
12  * it under the terms of the GNU General Public License version 2 as
13  * published by the Free Software Foundation.
14  */
15 
16 #ifndef __ASM_PLAT_MFP_H
17 #define __ASM_PLAT_MFP_H
18 
19 #define mfp_to_gpio(m) ((m) % 256)
20 
21 /* list of all the configurable MFP pins */
22 enum {
23  MFP_PIN_INVALID = -1,
24 
25  MFP_PIN_GPIO0 = 0,
26  MFP_PIN_GPIO1,
27  MFP_PIN_GPIO2,
28  MFP_PIN_GPIO3,
29  MFP_PIN_GPIO4,
30  MFP_PIN_GPIO5,
31  MFP_PIN_GPIO6,
32  MFP_PIN_GPIO7,
33  MFP_PIN_GPIO8,
34  MFP_PIN_GPIO9,
35  MFP_PIN_GPIO10,
36  MFP_PIN_GPIO11,
37  MFP_PIN_GPIO12,
38  MFP_PIN_GPIO13,
39  MFP_PIN_GPIO14,
40  MFP_PIN_GPIO15,
41  MFP_PIN_GPIO16,
42  MFP_PIN_GPIO17,
43  MFP_PIN_GPIO18,
44  MFP_PIN_GPIO19,
45  MFP_PIN_GPIO20,
46  MFP_PIN_GPIO21,
47  MFP_PIN_GPIO22,
48  MFP_PIN_GPIO23,
49  MFP_PIN_GPIO24,
50  MFP_PIN_GPIO25,
51  MFP_PIN_GPIO26,
52  MFP_PIN_GPIO27,
53  MFP_PIN_GPIO28,
54  MFP_PIN_GPIO29,
55  MFP_PIN_GPIO30,
56  MFP_PIN_GPIO31,
57  MFP_PIN_GPIO32,
58  MFP_PIN_GPIO33,
59  MFP_PIN_GPIO34,
60  MFP_PIN_GPIO35,
61  MFP_PIN_GPIO36,
62  MFP_PIN_GPIO37,
63  MFP_PIN_GPIO38,
64  MFP_PIN_GPIO39,
65  MFP_PIN_GPIO40,
66  MFP_PIN_GPIO41,
67  MFP_PIN_GPIO42,
68  MFP_PIN_GPIO43,
69  MFP_PIN_GPIO44,
70  MFP_PIN_GPIO45,
71  MFP_PIN_GPIO46,
72  MFP_PIN_GPIO47,
73  MFP_PIN_GPIO48,
74  MFP_PIN_GPIO49,
75  MFP_PIN_GPIO50,
76  MFP_PIN_GPIO51,
77  MFP_PIN_GPIO52,
78  MFP_PIN_GPIO53,
79  MFP_PIN_GPIO54,
80  MFP_PIN_GPIO55,
81  MFP_PIN_GPIO56,
82  MFP_PIN_GPIO57,
83  MFP_PIN_GPIO58,
84  MFP_PIN_GPIO59,
85  MFP_PIN_GPIO60,
86  MFP_PIN_GPIO61,
87  MFP_PIN_GPIO62,
88  MFP_PIN_GPIO63,
89  MFP_PIN_GPIO64,
90  MFP_PIN_GPIO65,
91  MFP_PIN_GPIO66,
92  MFP_PIN_GPIO67,
93  MFP_PIN_GPIO68,
94  MFP_PIN_GPIO69,
95  MFP_PIN_GPIO70,
96  MFP_PIN_GPIO71,
97  MFP_PIN_GPIO72,
98  MFP_PIN_GPIO73,
99  MFP_PIN_GPIO74,
100  MFP_PIN_GPIO75,
101  MFP_PIN_GPIO76,
102  MFP_PIN_GPIO77,
103  MFP_PIN_GPIO78,
104  MFP_PIN_GPIO79,
105  MFP_PIN_GPIO80,
106  MFP_PIN_GPIO81,
107  MFP_PIN_GPIO82,
108  MFP_PIN_GPIO83,
109  MFP_PIN_GPIO84,
110  MFP_PIN_GPIO85,
111  MFP_PIN_GPIO86,
112  MFP_PIN_GPIO87,
113  MFP_PIN_GPIO88,
114  MFP_PIN_GPIO89,
115  MFP_PIN_GPIO90,
116  MFP_PIN_GPIO91,
117  MFP_PIN_GPIO92,
118  MFP_PIN_GPIO93,
119  MFP_PIN_GPIO94,
120  MFP_PIN_GPIO95,
121  MFP_PIN_GPIO96,
122  MFP_PIN_GPIO97,
123  MFP_PIN_GPIO98,
124  MFP_PIN_GPIO99,
125  MFP_PIN_GPIO100,
126  MFP_PIN_GPIO101,
127  MFP_PIN_GPIO102,
128  MFP_PIN_GPIO103,
129  MFP_PIN_GPIO104,
130  MFP_PIN_GPIO105,
131  MFP_PIN_GPIO106,
132  MFP_PIN_GPIO107,
133  MFP_PIN_GPIO108,
134  MFP_PIN_GPIO109,
135  MFP_PIN_GPIO110,
136  MFP_PIN_GPIO111,
137  MFP_PIN_GPIO112,
138  MFP_PIN_GPIO113,
139  MFP_PIN_GPIO114,
140  MFP_PIN_GPIO115,
141  MFP_PIN_GPIO116,
142  MFP_PIN_GPIO117,
143  MFP_PIN_GPIO118,
144  MFP_PIN_GPIO119,
145  MFP_PIN_GPIO120,
146  MFP_PIN_GPIO121,
147  MFP_PIN_GPIO122,
148  MFP_PIN_GPIO123,
149  MFP_PIN_GPIO124,
150  MFP_PIN_GPIO125,
151  MFP_PIN_GPIO126,
152  MFP_PIN_GPIO127,
153 
154  MFP_PIN_GPIO128,
155  MFP_PIN_GPIO129,
156  MFP_PIN_GPIO130,
157  MFP_PIN_GPIO131,
158  MFP_PIN_GPIO132,
159  MFP_PIN_GPIO133,
160  MFP_PIN_GPIO134,
161  MFP_PIN_GPIO135,
162  MFP_PIN_GPIO136,
163  MFP_PIN_GPIO137,
164  MFP_PIN_GPIO138,
165  MFP_PIN_GPIO139,
166  MFP_PIN_GPIO140,
167  MFP_PIN_GPIO141,
168  MFP_PIN_GPIO142,
169  MFP_PIN_GPIO143,
170  MFP_PIN_GPIO144,
171  MFP_PIN_GPIO145,
172  MFP_PIN_GPIO146,
173  MFP_PIN_GPIO147,
174  MFP_PIN_GPIO148,
175  MFP_PIN_GPIO149,
176  MFP_PIN_GPIO150,
177  MFP_PIN_GPIO151,
178  MFP_PIN_GPIO152,
179  MFP_PIN_GPIO153,
180  MFP_PIN_GPIO154,
181  MFP_PIN_GPIO155,
182  MFP_PIN_GPIO156,
183  MFP_PIN_GPIO157,
184  MFP_PIN_GPIO158,
185  MFP_PIN_GPIO159,
186  MFP_PIN_GPIO160,
187  MFP_PIN_GPIO161,
188  MFP_PIN_GPIO162,
189  MFP_PIN_GPIO163,
190  MFP_PIN_GPIO164,
191  MFP_PIN_GPIO165,
192  MFP_PIN_GPIO166,
193  MFP_PIN_GPIO167,
194  MFP_PIN_GPIO168,
195  MFP_PIN_GPIO169,
196  MFP_PIN_GPIO170,
197  MFP_PIN_GPIO171,
198  MFP_PIN_GPIO172,
199  MFP_PIN_GPIO173,
200  MFP_PIN_GPIO174,
201  MFP_PIN_GPIO175,
202  MFP_PIN_GPIO176,
203  MFP_PIN_GPIO177,
204  MFP_PIN_GPIO178,
205  MFP_PIN_GPIO179,
206  MFP_PIN_GPIO180,
207  MFP_PIN_GPIO181,
208  MFP_PIN_GPIO182,
209  MFP_PIN_GPIO183,
210  MFP_PIN_GPIO184,
211  MFP_PIN_GPIO185,
212  MFP_PIN_GPIO186,
213  MFP_PIN_GPIO187,
214  MFP_PIN_GPIO188,
215  MFP_PIN_GPIO189,
216  MFP_PIN_GPIO190,
217  MFP_PIN_GPIO191,
218 
219  MFP_PIN_GPIO255 = 255,
220 
221  MFP_PIN_GPIO0_2,
222  MFP_PIN_GPIO1_2,
223  MFP_PIN_GPIO2_2,
224  MFP_PIN_GPIO3_2,
225  MFP_PIN_GPIO4_2,
226  MFP_PIN_GPIO5_2,
227  MFP_PIN_GPIO6_2,
228  MFP_PIN_GPIO7_2,
229  MFP_PIN_GPIO8_2,
230  MFP_PIN_GPIO9_2,
231  MFP_PIN_GPIO10_2,
232  MFP_PIN_GPIO11_2,
233  MFP_PIN_GPIO12_2,
234  MFP_PIN_GPIO13_2,
235  MFP_PIN_GPIO14_2,
236  MFP_PIN_GPIO15_2,
237  MFP_PIN_GPIO16_2,
238  MFP_PIN_GPIO17_2,
239 
240  MFP_PIN_ULPI_STP,
241  MFP_PIN_ULPI_NXT,
242  MFP_PIN_ULPI_DIR,
243 
244  MFP_PIN_nXCVREN,
245  MFP_PIN_DF_CLE_nOE,
246  MFP_PIN_DF_nADV1_ALE,
247  MFP_PIN_DF_SCLK_E,
248  MFP_PIN_DF_SCLK_S,
249  MFP_PIN_nBE0,
250  MFP_PIN_nBE1,
251  MFP_PIN_DF_nADV2_ALE,
252  MFP_PIN_DF_INT_RnB,
253  MFP_PIN_DF_nCS0,
254  MFP_PIN_DF_nCS1,
255  MFP_PIN_nLUA,
256  MFP_PIN_nLLA,
257  MFP_PIN_DF_nWE,
258  MFP_PIN_DF_ALE_nWE,
259  MFP_PIN_DF_nRE_nOE,
260  MFP_PIN_DF_ADDR0,
261  MFP_PIN_DF_ADDR1,
262  MFP_PIN_DF_ADDR2,
263  MFP_PIN_DF_ADDR3,
264  MFP_PIN_DF_IO0,
265  MFP_PIN_DF_IO1,
266  MFP_PIN_DF_IO2,
267  MFP_PIN_DF_IO3,
268  MFP_PIN_DF_IO4,
269  MFP_PIN_DF_IO5,
270  MFP_PIN_DF_IO6,
271  MFP_PIN_DF_IO7,
272  MFP_PIN_DF_IO8,
273  MFP_PIN_DF_IO9,
274  MFP_PIN_DF_IO10,
275  MFP_PIN_DF_IO11,
276  MFP_PIN_DF_IO12,
277  MFP_PIN_DF_IO13,
278  MFP_PIN_DF_IO14,
279  MFP_PIN_DF_IO15,
280  MFP_PIN_DF_nCS0_SM_nCS2,
281  MFP_PIN_DF_nCS1_SM_nCS3,
282  MFP_PIN_SM_nCS0,
283  MFP_PIN_SM_nCS1,
284  MFP_PIN_DF_WEn,
285  MFP_PIN_DF_REn,
286  MFP_PIN_DF_CLE_SM_OEn,
287  MFP_PIN_DF_ALE_SM_WEn,
288  MFP_PIN_DF_RDY0,
289  MFP_PIN_DF_RDY1,
290 
291  MFP_PIN_SM_SCLK,
292  MFP_PIN_SM_BE0,
293  MFP_PIN_SM_BE1,
294  MFP_PIN_SM_ADV,
295  MFP_PIN_SM_ADVMUX,
296  MFP_PIN_SM_RDY,
297 
298  MFP_PIN_MMC1_DAT7,
299  MFP_PIN_MMC1_DAT6,
300  MFP_PIN_MMC1_DAT5,
301  MFP_PIN_MMC1_DAT4,
302  MFP_PIN_MMC1_DAT3,
303  MFP_PIN_MMC1_DAT2,
304  MFP_PIN_MMC1_DAT1,
305  MFP_PIN_MMC1_DAT0,
306  MFP_PIN_MMC1_CMD,
307  MFP_PIN_MMC1_CLK,
308  MFP_PIN_MMC1_CD,
309  MFP_PIN_MMC1_WP,
310 
311  /* additional pins on PXA930 */
312  MFP_PIN_GSIM_UIO,
313  MFP_PIN_GSIM_UCLK,
314  MFP_PIN_GSIM_UDET,
315  MFP_PIN_GSIM_nURST,
316  MFP_PIN_PMIC_INT,
317  MFP_PIN_RDY,
318 
319  /* additional pins on MMP2 */
320  MFP_PIN_TWSI1_SCL,
321  MFP_PIN_TWSI1_SDA,
322  MFP_PIN_TWSI4_SCL,
323  MFP_PIN_TWSI4_SDA,
324  MFP_PIN_CLK_REQ,
325 
326  MFP_PIN_MAX,
327 };
328 
329 /*
330  * a possible MFP configuration is represented by a 32-bit integer
331  *
332  * bit 0.. 9 - MFP Pin Number (1024 Pins Maximum)
333  * bit 10..12 - Alternate Function Selection
334  * bit 13..15 - Drive Strength
335  * bit 16..18 - Low Power Mode State
336  * bit 19..20 - Low Power Mode Edge Detection
337  * bit 21..22 - Run Mode Pull State
338  *
339  * to facilitate the definition, the following macros are provided
340  *
341  * MFP_CFG_DEFAULT - default MFP configuration value, with
342  * alternate function = 0,
343  * drive strength = fast 3mA (MFP_DS03X)
344  * low power mode = default
345  * edge detection = none
346  *
347  * MFP_CFG - default MFPR value with alternate function
348  * MFP_CFG_DRV - default MFPR value with alternate function and
349  * pin drive strength
350  * MFP_CFG_LPM - default MFPR value with alternate function and
351  * low power mode
352  * MFP_CFG_X - default MFPR value with alternate function,
353  * pin drive strength and low power mode
354  */
355 
356 typedef unsigned long mfp_cfg_t;
357 
358 #define MFP_PIN(x) ((x) & 0x3ff)
359 
360 #define MFP_AF0 (0x0 << 10)
361 #define MFP_AF1 (0x1 << 10)
362 #define MFP_AF2 (0x2 << 10)
363 #define MFP_AF3 (0x3 << 10)
364 #define MFP_AF4 (0x4 << 10)
365 #define MFP_AF5 (0x5 << 10)
366 #define MFP_AF6 (0x6 << 10)
367 #define MFP_AF7 (0x7 << 10)
368 #define MFP_AF_MASK (0x7 << 10)
369 #define MFP_AF(x) (((x) >> 10) & 0x7)
370 
371 #define MFP_DS01X (0x0 << 13)
372 #define MFP_DS02X (0x1 << 13)
373 #define MFP_DS03X (0x2 << 13)
374 #define MFP_DS04X (0x3 << 13)
375 #define MFP_DS06X (0x4 << 13)
376 #define MFP_DS08X (0x5 << 13)
377 #define MFP_DS10X (0x6 << 13)
378 #define MFP_DS13X (0x7 << 13)
379 #define MFP_DS_MASK (0x7 << 13)
380 #define MFP_DS(x) (((x) >> 13) & 0x7)
381 
382 #define MFP_LPM_DEFAULT (0x0 << 16)
383 #define MFP_LPM_DRIVE_LOW (0x1 << 16)
384 #define MFP_LPM_DRIVE_HIGH (0x2 << 16)
385 #define MFP_LPM_PULL_LOW (0x3 << 16)
386 #define MFP_LPM_PULL_HIGH (0x4 << 16)
387 #define MFP_LPM_FLOAT (0x5 << 16)
388 #define MFP_LPM_INPUT (0x6 << 16)
389 #define MFP_LPM_STATE_MASK (0x7 << 16)
390 #define MFP_LPM_STATE(x) (((x) >> 16) & 0x7)
391 
392 #define MFP_LPM_EDGE_NONE (0x0 << 19)
393 #define MFP_LPM_EDGE_RISE (0x1 << 19)
394 #define MFP_LPM_EDGE_FALL (0x2 << 19)
395 #define MFP_LPM_EDGE_BOTH (0x3 << 19)
396 #define MFP_LPM_EDGE_MASK (0x3 << 19)
397 #define MFP_LPM_EDGE(x) (((x) >> 19) & 0x3)
398 
399 #define MFP_PULL_NONE (0x0 << 21)
400 #define MFP_PULL_LOW (0x1 << 21)
401 #define MFP_PULL_HIGH (0x2 << 21)
402 #define MFP_PULL_BOTH (0x3 << 21)
403 #define MFP_PULL_FLOAT (0x4 << 21)
404 #define MFP_PULL_MASK (0x7 << 21)
405 #define MFP_PULL(x) (((x) >> 21) & 0x7)
406 
407 #define MFP_CFG_DEFAULT (MFP_AF0 | MFP_DS03X | MFP_LPM_DEFAULT |\
408  MFP_LPM_EDGE_NONE | MFP_PULL_NONE)
409 
410 #define MFP_CFG(pin, af) \
411  ((MFP_CFG_DEFAULT & ~MFP_AF_MASK) |\
412  (MFP_PIN(MFP_PIN_##pin) | MFP_##af))
413 
414 #define MFP_CFG_DRV(pin, af, drv) \
415  ((MFP_CFG_DEFAULT & ~(MFP_AF_MASK | MFP_DS_MASK)) |\
416  (MFP_PIN(MFP_PIN_##pin) | MFP_##af | MFP_##drv))
417 
418 #define MFP_CFG_LPM(pin, af, lpm) \
419  ((MFP_CFG_DEFAULT & ~(MFP_AF_MASK | MFP_LPM_STATE_MASK)) |\
420  (MFP_PIN(MFP_PIN_##pin) | MFP_##af | MFP_LPM_##lpm))
421 
422 #define MFP_CFG_X(pin, af, drv, lpm) \
423  ((MFP_CFG_DEFAULT & ~(MFP_AF_MASK | MFP_DS_MASK | MFP_LPM_STATE_MASK)) |\
424  (MFP_PIN(MFP_PIN_##pin) | MFP_##af | MFP_##drv | MFP_LPM_##lpm))
425 
426 #if defined(CONFIG_PXA3xx) || defined(CONFIG_PXA95x) || defined(CONFIG_ARCH_MMP)
427 /*
428  * each MFP pin will have a MFPR register, since the offset of the
429  * register varies between processors, the processor specific code
430  * should initialize the pin offsets by mfp_init()
431  *
432  * mfp_init_base() - accepts a virtual base for all MFPR registers and
433  * initialize the MFP table to a default state
434  *
435  * mfp_init_addr() - accepts a table of "mfp_addr_map" structure, which
436  * represents a range of MFP pins from "start" to "end", with the offset
437  * beginning at "offset", to define a single pin, let "end" = -1.
438  *
439  * use
440  *
441  * MFP_ADDR_X() to define a range of pins
442  * MFP_ADDR() to define a single pin
443  * MFP_ADDR_END to signal the end of pin offset definitions
444  */
445 struct mfp_addr_map {
446  unsigned int start;
447  unsigned int end;
448  unsigned long offset;
449 };
450 
451 #define MFP_ADDR_X(start, end, offset) \
452  { MFP_PIN_##start, MFP_PIN_##end, offset }
453 
454 #define MFP_ADDR(pin, offset) \
455  { MFP_PIN_##pin, -1, offset }
456 
457 #define MFP_ADDR_END { MFP_PIN_INVALID, 0 }
458 
459 void __init mfp_init_base(void __iomem *mfpr_base);
460 void __init mfp_init_addr(struct mfp_addr_map *map);
461 
462 /*
463  * mfp_{read, write}() - for direct read/write access to the MFPR register
464  * mfp_config() - for configuring a group of MFPR registers
465  * mfp_config_lpm() - configuring all low power MFPR registers for suspend
466  * mfp_config_run() - configuring all run time MFPR registers after resume
467  */
468 unsigned long mfp_read(int mfp);
469 void mfp_write(int mfp, unsigned long mfpr_val);
470 void mfp_config(unsigned long *mfp_cfgs, int num);
471 void mfp_config_run(void);
472 void mfp_config_lpm(void);
473 #endif /* CONFIG_PXA3xx || CONFIG_PXA95x || CONFIG_ARCH_MMP */
474 
475 #endif /* __ASM_PLAT_MFP_H */
Generated on Thu Jan 10 2013 12:59:47 for Linux Kernel by   doxygen 1.8.2