1 /*
2  * Driver header file for the ST Microelectronics SPEAr pinmux
3  *
4  * Copyright (C) 2012 ST Microelectronics
5  * Viresh Kumar <vireshk@kernel.org>
6  *
7  * This file is licensed under the terms of the GNU General Public
8  * License version 2. This program is licensed "as is" without any
9  * warranty of any kind, whether express or implied.
10  */
11 
12 #ifndef __PINMUX_SPEAR_H__
13 #define __PINMUX_SPEAR_H__
14 
15 #include <linux/gpio.h>
16 #include <linux/io.h>
17 #include <linux/pinctrl/pinctrl.h>
18 #include <linux/types.h>
19 
20 struct platform_device;
21 struct device;
22 struct spear_pmx;
23 
24 /**
25  * struct spear_pmx_mode - SPEAr pmx mode
26  * @name: name of pmx mode
27  * @mode: mode id
28  * @reg: register for configuring this mode
29  * @mask: mask of this mode in reg
30  * @val: val to be configured at reg after doing (val & mask)
31  */
32 struct spear_pmx_mode {
33 	const char *const name;
34 	u16 mode;
35 	u16 reg;
36 	u16 mask;
37 	u32 val;
38 };
39 
40 /**
41  * struct spear_muxreg - SPEAr mux reg configuration
42  * @reg: register offset
43  * @mask: mask bits
44  * @val: val to be written on mask bits
45  */
46 struct spear_muxreg {
47 	u16 reg;
48 	u32 mask;
49 	u32 val;
50 };
51 
52 struct spear_gpio_pingroup {
53 	const unsigned *pins;
54 	unsigned npins;
55 	struct spear_muxreg *muxregs;
56 	u8 nmuxregs;
57 };
58 
59 /* ste: set to enable */
60 #define DEFINE_MUXREG(__pins, __muxreg, __mask, __ste)		\
61 static struct spear_muxreg __pins##_muxregs[] = {		\
62 	{							\
63 		.reg = __muxreg,				\
64 		.mask = __mask,					\
65 		.val = __ste ? __mask : 0,			\
66 	},							\
67 }
68 
69 #define DEFINE_2_MUXREG(__pins, __muxreg1, __muxreg2, __mask, __ste1, __ste2) \
70 static struct spear_muxreg __pins##_muxregs[] = {		\
71 	{							\
72 		.reg = __muxreg1,				\
73 		.mask = __mask,					\
74 		.val = __ste1 ? __mask : 0,			\
75 	}, {							\
76 		.reg = __muxreg2,				\
77 		.mask = __mask,					\
78 		.val = __ste2 ? __mask : 0,			\
79 	},							\
80 }
81 
82 #define GPIO_PINGROUP(__pins)					\
83 	{							\
84 		.pins = __pins,					\
85 		.npins = ARRAY_SIZE(__pins),			\
86 		.muxregs = __pins##_muxregs,			\
87 		.nmuxregs = ARRAY_SIZE(__pins##_muxregs),	\
88 	}
89 
90 /**
91  * struct spear_modemux - SPEAr mode mux configuration
92  * @modes: mode ids supported by this group of muxregs
93  * @nmuxregs: number of muxreg configurations to be done for modes
94  * @muxregs: array of muxreg configurations to be done for modes
95  */
96 struct spear_modemux {
97 	u16 modes;
98 	u8 nmuxregs;
99 	struct spear_muxreg *muxregs;
100 };
101 
102 /**
103  * struct spear_pingroup - SPEAr pin group configurations
104  * @name: name of pin group
105  * @pins: array containing pin numbers
106  * @npins: size of pins array
107  * @modemuxs: array of modemux configurations for this pin group
108  * @nmodemuxs: size of array modemuxs
109  *
110  * A representation of a group of pins in the SPEAr pin controller. Each group
111  * allows some parameter or parameters to be configured.
112  */
113 struct spear_pingroup {
114 	const char *name;
115 	const unsigned *pins;
116 	unsigned npins;
117 	struct spear_modemux *modemuxs;
118 	unsigned nmodemuxs;
119 };
120 
121 /**
122  * struct spear_function - SPEAr pinctrl mux function
123  * @name: The name of the function, exported to pinctrl core.
124  * @groups: An array of pin groups that may select this function.
125  * @ngroups: The number of entries in @groups.
126  */
127 struct spear_function {
128 	const char *name;
129 	const char *const *groups;
130 	unsigned ngroups;
131 };
132 
133 /**
134  * struct spear_pinctrl_machdata - SPEAr pin controller machine driver
135  *	configuration
136  * @pins: An array describing all pins the pin controller affects.
137  *	All pins which are also GPIOs must be listed first within the *array,
138  *	and be numbered identically to the GPIO controller's *numbering.
139  * @npins: The numbmer of entries in @pins.
140  * @functions: An array describing all mux functions the SoC supports.
141  * @nfunctions: The numbmer of entries in @functions.
142  * @groups: An array describing all pin groups the pin SoC supports.
143  * @ngroups: The numbmer of entries in @groups.
144  * @gpio_pingroups: gpio pingroups
145  * @ngpio_pingroups: gpio pingroups count
146  *
147  * @modes_supported: Does SoC support modes
148  * @mode: mode configured from probe
149  * @pmx_modes: array of modes supported by SoC
150  * @npmx_modes: number of entries in pmx_modes.
151  */
152 struct spear_pinctrl_machdata {
153 	const struct pinctrl_pin_desc *pins;
154 	unsigned npins;
155 	struct spear_function **functions;
156 	unsigned nfunctions;
157 	struct spear_pingroup **groups;
158 	unsigned ngroups;
159 	struct spear_gpio_pingroup *gpio_pingroups;
160 	void (*gpio_request_endisable)(struct spear_pmx *pmx, int offset,
161 			bool enable);
162 	unsigned ngpio_pingroups;
163 
164 	bool modes_supported;
165 	u16 mode;
166 	struct spear_pmx_mode **pmx_modes;
167 	unsigned npmx_modes;
168 };
169 
170 /**
171  * struct spear_pmx - SPEAr pinctrl mux
172  * @dev: pointer to struct dev of platform_device registered
173  * @pctl: pointer to struct pinctrl_dev
174  * @machdata: pointer to SoC or machine specific structure
175  * @vbase: virtual base address of pinmux controller
176  */
177 struct spear_pmx {
178 	struct device *dev;
179 	struct pinctrl_dev *pctl;
180 	struct spear_pinctrl_machdata *machdata;
181 	void __iomem *vbase;
182 };
183 
184 /* exported routines */
185 static inline u32 pmx_readl(struct spear_pmx *pmx, u32 reg)
186 {
187 	return readl_relaxed(pmx->vbase + reg);
188 }
189 
190 static inline void pmx_writel(struct spear_pmx *pmx, u32 val, u32 reg)
191 {
192 	writel_relaxed(val, pmx->vbase + reg);
193 }
194 
195 void pmx_init_addr(struct spear_pinctrl_machdata *machdata, u16 reg);
196 void pmx_init_gpio_pingroup_addr(struct spear_gpio_pingroup *gpio_pingroup,
197 				 unsigned count, u16 reg);
198 int spear_pinctrl_probe(struct platform_device *pdev,
199 			struct spear_pinctrl_machdata *machdata);
200 
201 #define SPEAR_PIN_0_TO_101		\
202 	PINCTRL_PIN(0, "PLGPIO0"),	\
203 	PINCTRL_PIN(1, "PLGPIO1"),	\
204 	PINCTRL_PIN(2, "PLGPIO2"),	\
205 	PINCTRL_PIN(3, "PLGPIO3"),	\
206 	PINCTRL_PIN(4, "PLGPIO4"),	\
207 	PINCTRL_PIN(5, "PLGPIO5"),	\
208 	PINCTRL_PIN(6, "PLGPIO6"),	\
209 	PINCTRL_PIN(7, "PLGPIO7"),	\
210 	PINCTRL_PIN(8, "PLGPIO8"),	\
211 	PINCTRL_PIN(9, "PLGPIO9"),	\
212 	PINCTRL_PIN(10, "PLGPIO10"),	\
213 	PINCTRL_PIN(11, "PLGPIO11"),	\
214 	PINCTRL_PIN(12, "PLGPIO12"),	\
215 	PINCTRL_PIN(13, "PLGPIO13"),	\
216 	PINCTRL_PIN(14, "PLGPIO14"),	\
217 	PINCTRL_PIN(15, "PLGPIO15"),	\
218 	PINCTRL_PIN(16, "PLGPIO16"),	\
219 	PINCTRL_PIN(17, "PLGPIO17"),	\
220 	PINCTRL_PIN(18, "PLGPIO18"),	\
221 	PINCTRL_PIN(19, "PLGPIO19"),	\
222 	PINCTRL_PIN(20, "PLGPIO20"),	\
223 	PINCTRL_PIN(21, "PLGPIO21"),	\
224 	PINCTRL_PIN(22, "PLGPIO22"),	\
225 	PINCTRL_PIN(23, "PLGPIO23"),	\
226 	PINCTRL_PIN(24, "PLGPIO24"),	\
227 	PINCTRL_PIN(25, "PLGPIO25"),	\
228 	PINCTRL_PIN(26, "PLGPIO26"),	\
229 	PINCTRL_PIN(27, "PLGPIO27"),	\
230 	PINCTRL_PIN(28, "PLGPIO28"),	\
231 	PINCTRL_PIN(29, "PLGPIO29"),	\
232 	PINCTRL_PIN(30, "PLGPIO30"),	\
233 	PINCTRL_PIN(31, "PLGPIO31"),	\
234 	PINCTRL_PIN(32, "PLGPIO32"),	\
235 	PINCTRL_PIN(33, "PLGPIO33"),	\
236 	PINCTRL_PIN(34, "PLGPIO34"),	\
237 	PINCTRL_PIN(35, "PLGPIO35"),	\
238 	PINCTRL_PIN(36, "PLGPIO36"),	\
239 	PINCTRL_PIN(37, "PLGPIO37"),	\
240 	PINCTRL_PIN(38, "PLGPIO38"),	\
241 	PINCTRL_PIN(39, "PLGPIO39"),	\
242 	PINCTRL_PIN(40, "PLGPIO40"),	\
243 	PINCTRL_PIN(41, "PLGPIO41"),	\
244 	PINCTRL_PIN(42, "PLGPIO42"),	\
245 	PINCTRL_PIN(43, "PLGPIO43"),	\
246 	PINCTRL_PIN(44, "PLGPIO44"),	\
247 	PINCTRL_PIN(45, "PLGPIO45"),	\
248 	PINCTRL_PIN(46, "PLGPIO46"),	\
249 	PINCTRL_PIN(47, "PLGPIO47"),	\
250 	PINCTRL_PIN(48, "PLGPIO48"),	\
251 	PINCTRL_PIN(49, "PLGPIO49"),	\
252 	PINCTRL_PIN(50, "PLGPIO50"),	\
253 	PINCTRL_PIN(51, "PLGPIO51"),	\
254 	PINCTRL_PIN(52, "PLGPIO52"),	\
255 	PINCTRL_PIN(53, "PLGPIO53"),	\
256 	PINCTRL_PIN(54, "PLGPIO54"),	\
257 	PINCTRL_PIN(55, "PLGPIO55"),	\
258 	PINCTRL_PIN(56, "PLGPIO56"),	\
259 	PINCTRL_PIN(57, "PLGPIO57"),	\
260 	PINCTRL_PIN(58, "PLGPIO58"),	\
261 	PINCTRL_PIN(59, "PLGPIO59"),	\
262 	PINCTRL_PIN(60, "PLGPIO60"),	\
263 	PINCTRL_PIN(61, "PLGPIO61"),	\
264 	PINCTRL_PIN(62, "PLGPIO62"),	\
265 	PINCTRL_PIN(63, "PLGPIO63"),	\
266 	PINCTRL_PIN(64, "PLGPIO64"),	\
267 	PINCTRL_PIN(65, "PLGPIO65"),	\
268 	PINCTRL_PIN(66, "PLGPIO66"),	\
269 	PINCTRL_PIN(67, "PLGPIO67"),	\
270 	PINCTRL_PIN(68, "PLGPIO68"),	\
271 	PINCTRL_PIN(69, "PLGPIO69"),	\
272 	PINCTRL_PIN(70, "PLGPIO70"),	\
273 	PINCTRL_PIN(71, "PLGPIO71"),	\
274 	PINCTRL_PIN(72, "PLGPIO72"),	\
275 	PINCTRL_PIN(73, "PLGPIO73"),	\
276 	PINCTRL_PIN(74, "PLGPIO74"),	\
277 	PINCTRL_PIN(75, "PLGPIO75"),	\
278 	PINCTRL_PIN(76, "PLGPIO76"),	\
279 	PINCTRL_PIN(77, "PLGPIO77"),	\
280 	PINCTRL_PIN(78, "PLGPIO78"),	\
281 	PINCTRL_PIN(79, "PLGPIO79"),	\
282 	PINCTRL_PIN(80, "PLGPIO80"),	\
283 	PINCTRL_PIN(81, "PLGPIO81"),	\
284 	PINCTRL_PIN(82, "PLGPIO82"),	\
285 	PINCTRL_PIN(83, "PLGPIO83"),	\
286 	PINCTRL_PIN(84, "PLGPIO84"),	\
287 	PINCTRL_PIN(85, "PLGPIO85"),	\
288 	PINCTRL_PIN(86, "PLGPIO86"),	\
289 	PINCTRL_PIN(87, "PLGPIO87"),	\
290 	PINCTRL_PIN(88, "PLGPIO88"),	\
291 	PINCTRL_PIN(89, "PLGPIO89"),	\
292 	PINCTRL_PIN(90, "PLGPIO90"),	\
293 	PINCTRL_PIN(91, "PLGPIO91"),	\
294 	PINCTRL_PIN(92, "PLGPIO92"),	\
295 	PINCTRL_PIN(93, "PLGPIO93"),	\
296 	PINCTRL_PIN(94, "PLGPIO94"),	\
297 	PINCTRL_PIN(95, "PLGPIO95"),	\
298 	PINCTRL_PIN(96, "PLGPIO96"),	\
299 	PINCTRL_PIN(97, "PLGPIO97"),	\
300 	PINCTRL_PIN(98, "PLGPIO98"),	\
301 	PINCTRL_PIN(99, "PLGPIO99"),	\
302 	PINCTRL_PIN(100, "PLGPIO100"),	\
303 	PINCTRL_PIN(101, "PLGPIO101")
304 
305 #define SPEAR_PIN_102_TO_245		\
306 	PINCTRL_PIN(102, "PLGPIO102"),	\
307 	PINCTRL_PIN(103, "PLGPIO103"),	\
308 	PINCTRL_PIN(104, "PLGPIO104"),	\
309 	PINCTRL_PIN(105, "PLGPIO105"),	\
310 	PINCTRL_PIN(106, "PLGPIO106"),	\
311 	PINCTRL_PIN(107, "PLGPIO107"),	\
312 	PINCTRL_PIN(108, "PLGPIO108"),	\
313 	PINCTRL_PIN(109, "PLGPIO109"),	\
314 	PINCTRL_PIN(110, "PLGPIO110"),	\
315 	PINCTRL_PIN(111, "PLGPIO111"),	\
316 	PINCTRL_PIN(112, "PLGPIO112"),	\
317 	PINCTRL_PIN(113, "PLGPIO113"),	\
318 	PINCTRL_PIN(114, "PLGPIO114"),	\
319 	PINCTRL_PIN(115, "PLGPIO115"),	\
320 	PINCTRL_PIN(116, "PLGPIO116"),	\
321 	PINCTRL_PIN(117, "PLGPIO117"),	\
322 	PINCTRL_PIN(118, "PLGPIO118"),	\
323 	PINCTRL_PIN(119, "PLGPIO119"),	\
324 	PINCTRL_PIN(120, "PLGPIO120"),	\
325 	PINCTRL_PIN(121, "PLGPIO121"),	\
326 	PINCTRL_PIN(122, "PLGPIO122"),	\
327 	PINCTRL_PIN(123, "PLGPIO123"),	\
328 	PINCTRL_PIN(124, "PLGPIO124"),	\
329 	PINCTRL_PIN(125, "PLGPIO125"),	\
330 	PINCTRL_PIN(126, "PLGPIO126"),	\
331 	PINCTRL_PIN(127, "PLGPIO127"),	\
332 	PINCTRL_PIN(128, "PLGPIO128"),	\
333 	PINCTRL_PIN(129, "PLGPIO129"),	\
334 	PINCTRL_PIN(130, "PLGPIO130"),	\
335 	PINCTRL_PIN(131, "PLGPIO131"),	\
336 	PINCTRL_PIN(132, "PLGPIO132"),	\
337 	PINCTRL_PIN(133, "PLGPIO133"),	\
338 	PINCTRL_PIN(134, "PLGPIO134"),	\
339 	PINCTRL_PIN(135, "PLGPIO135"),	\
340 	PINCTRL_PIN(136, "PLGPIO136"),	\
341 	PINCTRL_PIN(137, "PLGPIO137"),	\
342 	PINCTRL_PIN(138, "PLGPIO138"),	\
343 	PINCTRL_PIN(139, "PLGPIO139"),	\
344 	PINCTRL_PIN(140, "PLGPIO140"),	\
345 	PINCTRL_PIN(141, "PLGPIO141"),	\
346 	PINCTRL_PIN(142, "PLGPIO142"),	\
347 	PINCTRL_PIN(143, "PLGPIO143"),	\
348 	PINCTRL_PIN(144, "PLGPIO144"),	\
349 	PINCTRL_PIN(145, "PLGPIO145"),	\
350 	PINCTRL_PIN(146, "PLGPIO146"),	\
351 	PINCTRL_PIN(147, "PLGPIO147"),	\
352 	PINCTRL_PIN(148, "PLGPIO148"),	\
353 	PINCTRL_PIN(149, "PLGPIO149"),	\
354 	PINCTRL_PIN(150, "PLGPIO150"),	\
355 	PINCTRL_PIN(151, "PLGPIO151"),	\
356 	PINCTRL_PIN(152, "PLGPIO152"),	\
357 	PINCTRL_PIN(153, "PLGPIO153"),	\
358 	PINCTRL_PIN(154, "PLGPIO154"),	\
359 	PINCTRL_PIN(155, "PLGPIO155"),	\
360 	PINCTRL_PIN(156, "PLGPIO156"),	\
361 	PINCTRL_PIN(157, "PLGPIO157"),	\
362 	PINCTRL_PIN(158, "PLGPIO158"),	\
363 	PINCTRL_PIN(159, "PLGPIO159"),	\
364 	PINCTRL_PIN(160, "PLGPIO160"),	\
365 	PINCTRL_PIN(161, "PLGPIO161"),	\
366 	PINCTRL_PIN(162, "PLGPIO162"),	\
367 	PINCTRL_PIN(163, "PLGPIO163"),	\
368 	PINCTRL_PIN(164, "PLGPIO164"),	\
369 	PINCTRL_PIN(165, "PLGPIO165"),	\
370 	PINCTRL_PIN(166, "PLGPIO166"),	\
371 	PINCTRL_PIN(167, "PLGPIO167"),	\
372 	PINCTRL_PIN(168, "PLGPIO168"),	\
373 	PINCTRL_PIN(169, "PLGPIO169"),	\
374 	PINCTRL_PIN(170, "PLGPIO170"),	\
375 	PINCTRL_PIN(171, "PLGPIO171"),	\
376 	PINCTRL_PIN(172, "PLGPIO172"),	\
377 	PINCTRL_PIN(173, "PLGPIO173"),	\
378 	PINCTRL_PIN(174, "PLGPIO174"),	\
379 	PINCTRL_PIN(175, "PLGPIO175"),	\
380 	PINCTRL_PIN(176, "PLGPIO176"),	\
381 	PINCTRL_PIN(177, "PLGPIO177"),	\
382 	PINCTRL_PIN(178, "PLGPIO178"),	\
383 	PINCTRL_PIN(179, "PLGPIO179"),	\
384 	PINCTRL_PIN(180, "PLGPIO180"),	\
385 	PINCTRL_PIN(181, "PLGPIO181"),	\
386 	PINCTRL_PIN(182, "PLGPIO182"),	\
387 	PINCTRL_PIN(183, "PLGPIO183"),	\
388 	PINCTRL_PIN(184, "PLGPIO184"),	\
389 	PINCTRL_PIN(185, "PLGPIO185"),	\
390 	PINCTRL_PIN(186, "PLGPIO186"),	\
391 	PINCTRL_PIN(187, "PLGPIO187"),	\
392 	PINCTRL_PIN(188, "PLGPIO188"),	\
393 	PINCTRL_PIN(189, "PLGPIO189"),	\
394 	PINCTRL_PIN(190, "PLGPIO190"),	\
395 	PINCTRL_PIN(191, "PLGPIO191"),	\
396 	PINCTRL_PIN(192, "PLGPIO192"),	\
397 	PINCTRL_PIN(193, "PLGPIO193"),	\
398 	PINCTRL_PIN(194, "PLGPIO194"),	\
399 	PINCTRL_PIN(195, "PLGPIO195"),	\
400 	PINCTRL_PIN(196, "PLGPIO196"),	\
401 	PINCTRL_PIN(197, "PLGPIO197"),	\
402 	PINCTRL_PIN(198, "PLGPIO198"),	\
403 	PINCTRL_PIN(199, "PLGPIO199"),	\
404 	PINCTRL_PIN(200, "PLGPIO200"),	\
405 	PINCTRL_PIN(201, "PLGPIO201"),	\
406 	PINCTRL_PIN(202, "PLGPIO202"),	\
407 	PINCTRL_PIN(203, "PLGPIO203"),	\
408 	PINCTRL_PIN(204, "PLGPIO204"),	\
409 	PINCTRL_PIN(205, "PLGPIO205"),	\
410 	PINCTRL_PIN(206, "PLGPIO206"),	\
411 	PINCTRL_PIN(207, "PLGPIO207"),	\
412 	PINCTRL_PIN(208, "PLGPIO208"),	\
413 	PINCTRL_PIN(209, "PLGPIO209"),	\
414 	PINCTRL_PIN(210, "PLGPIO210"),	\
415 	PINCTRL_PIN(211, "PLGPIO211"),	\
416 	PINCTRL_PIN(212, "PLGPIO212"),	\
417 	PINCTRL_PIN(213, "PLGPIO213"),	\
418 	PINCTRL_PIN(214, "PLGPIO214"),	\
419 	PINCTRL_PIN(215, "PLGPIO215"),	\
420 	PINCTRL_PIN(216, "PLGPIO216"),	\
421 	PINCTRL_PIN(217, "PLGPIO217"),	\
422 	PINCTRL_PIN(218, "PLGPIO218"),	\
423 	PINCTRL_PIN(219, "PLGPIO219"),	\
424 	PINCTRL_PIN(220, "PLGPIO220"),	\
425 	PINCTRL_PIN(221, "PLGPIO221"),	\
426 	PINCTRL_PIN(222, "PLGPIO222"),	\
427 	PINCTRL_PIN(223, "PLGPIO223"),	\
428 	PINCTRL_PIN(224, "PLGPIO224"),	\
429 	PINCTRL_PIN(225, "PLGPIO225"),	\
430 	PINCTRL_PIN(226, "PLGPIO226"),	\
431 	PINCTRL_PIN(227, "PLGPIO227"),	\
432 	PINCTRL_PIN(228, "PLGPIO228"),	\
433 	PINCTRL_PIN(229, "PLGPIO229"),	\
434 	PINCTRL_PIN(230, "PLGPIO230"),	\
435 	PINCTRL_PIN(231, "PLGPIO231"),	\
436 	PINCTRL_PIN(232, "PLGPIO232"),	\
437 	PINCTRL_PIN(233, "PLGPIO233"),	\
438 	PINCTRL_PIN(234, "PLGPIO234"),	\
439 	PINCTRL_PIN(235, "PLGPIO235"),	\
440 	PINCTRL_PIN(236, "PLGPIO236"),	\
441 	PINCTRL_PIN(237, "PLGPIO237"),	\
442 	PINCTRL_PIN(238, "PLGPIO238"),	\
443 	PINCTRL_PIN(239, "PLGPIO239"),	\
444 	PINCTRL_PIN(240, "PLGPIO240"),	\
445 	PINCTRL_PIN(241, "PLGPIO241"),	\
446 	PINCTRL_PIN(242, "PLGPIO242"),	\
447 	PINCTRL_PIN(243, "PLGPIO243"),	\
448 	PINCTRL_PIN(244, "PLGPIO244"),	\
449 	PINCTRL_PIN(245, "PLGPIO245")
450 
451 #endif /* __PINMUX_SPEAR_H__ */
452