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 <eric.miao@marvell.com>
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 */
476