1 /*
2 * pinmux driver for CSR SiRFprimaII
3 *
4 * Copyright (c) 2011 Cambridge Silicon Radio Limited, a CSR plc group company.
5 *
6 * Licensed under GPLv2 or later.
7 */
8
9 #include <linux/init.h>
10 #include <linux/module.h>
11 #include <linux/platform_device.h>
12 #include <linux/io.h>
13 #include <linux/slab.h>
14 #include <linux/err.h>
15 #include <linux/pinctrl/pinctrl.h>
16 #include <linux/pinctrl/pinmux.h>
17 #include <linux/of.h>
18 #include <linux/of_address.h>
19 #include <linux/of_device.h>
20 #include <linux/of_platform.h>
21 #include <linux/bitops.h>
22
23 #define DRIVER_NAME "pinmux-sirf"
24
25 #define SIRFSOC_NUM_PADS 622
26 #define SIRFSOC_GPIO_PAD_EN(g) ((g)*0x100 + 0x84)
27 #define SIRFSOC_RSC_PIN_MUX 0x4
28
29 /*
30 * pad list for the pinmux subsystem
31 * refer to CS-131858-DC-6A.xls
32 */
33 static const struct pinctrl_pin_desc sirfsoc_pads[] = {
34 PINCTRL_PIN(4, "pwm0"),
35 PINCTRL_PIN(5, "pwm1"),
36 PINCTRL_PIN(6, "pwm2"),
37 PINCTRL_PIN(7, "pwm3"),
38 PINCTRL_PIN(8, "warm_rst_b"),
39 PINCTRL_PIN(9, "odo_0"),
40 PINCTRL_PIN(10, "odo_1"),
41 PINCTRL_PIN(11, "dr_dir"),
42 PINCTRL_PIN(13, "scl_1"),
43 PINCTRL_PIN(15, "sda_1"),
44 PINCTRL_PIN(16, "x_ldd[16]"),
45 PINCTRL_PIN(17, "x_ldd[17]"),
46 PINCTRL_PIN(18, "x_ldd[18]"),
47 PINCTRL_PIN(19, "x_ldd[19]"),
48 PINCTRL_PIN(20, "x_ldd[20]"),
49 PINCTRL_PIN(21, "x_ldd[21]"),
50 PINCTRL_PIN(22, "x_ldd[22]"),
51 PINCTRL_PIN(23, "x_ldd[23], lcdrom_frdy"),
52 PINCTRL_PIN(24, "gps_sgn"),
53 PINCTRL_PIN(25, "gps_mag"),
54 PINCTRL_PIN(26, "gps_clk"),
55 PINCTRL_PIN(27, "sd_cd_b_1"),
56 PINCTRL_PIN(28, "sd_vcc_on_1"),
57 PINCTRL_PIN(29, "sd_wp_b_1"),
58 PINCTRL_PIN(30, "sd_clk_3"),
59 PINCTRL_PIN(31, "sd_cmd_3"),
60
61 PINCTRL_PIN(32, "x_sd_dat_3[0]"),
62 PINCTRL_PIN(33, "x_sd_dat_3[1]"),
63 PINCTRL_PIN(34, "x_sd_dat_3[2]"),
64 PINCTRL_PIN(35, "x_sd_dat_3[3]"),
65 PINCTRL_PIN(36, "x_sd_clk_4"),
66 PINCTRL_PIN(37, "x_sd_cmd_4"),
67 PINCTRL_PIN(38, "x_sd_dat_4[0]"),
68 PINCTRL_PIN(39, "x_sd_dat_4[1]"),
69 PINCTRL_PIN(40, "x_sd_dat_4[2]"),
70 PINCTRL_PIN(41, "x_sd_dat_4[3]"),
71 PINCTRL_PIN(42, "x_cko_1"),
72 PINCTRL_PIN(43, "x_ac97_bit_clk"),
73 PINCTRL_PIN(44, "x_ac97_dout"),
74 PINCTRL_PIN(45, "x_ac97_din"),
75 PINCTRL_PIN(46, "x_ac97_sync"),
76 PINCTRL_PIN(47, "x_txd_1"),
77 PINCTRL_PIN(48, "x_txd_2"),
78 PINCTRL_PIN(49, "x_rxd_1"),
79 PINCTRL_PIN(50, "x_rxd_2"),
80 PINCTRL_PIN(51, "x_usclk_0"),
81 PINCTRL_PIN(52, "x_utxd_0"),
82 PINCTRL_PIN(53, "x_urxd_0"),
83 PINCTRL_PIN(54, "x_utfs_0"),
84 PINCTRL_PIN(55, "x_urfs_0"),
85 PINCTRL_PIN(56, "x_usclk_1"),
86 PINCTRL_PIN(57, "x_utxd_1"),
87 PINCTRL_PIN(58, "x_urxd_1"),
88 PINCTRL_PIN(59, "x_utfs_1"),
89 PINCTRL_PIN(60, "x_urfs_1"),
90 PINCTRL_PIN(61, "x_usclk_2"),
91 PINCTRL_PIN(62, "x_utxd_2"),
92 PINCTRL_PIN(63, "x_urxd_2"),
93
94 PINCTRL_PIN(64, "x_utfs_2"),
95 PINCTRL_PIN(65, "x_urfs_2"),
96 PINCTRL_PIN(66, "x_df_we_b"),
97 PINCTRL_PIN(67, "x_df_re_b"),
98 PINCTRL_PIN(68, "x_txd_0"),
99 PINCTRL_PIN(69, "x_rxd_0"),
100 PINCTRL_PIN(78, "x_cko_0"),
101 PINCTRL_PIN(79, "x_vip_pxd[7]"),
102 PINCTRL_PIN(80, "x_vip_pxd[6]"),
103 PINCTRL_PIN(81, "x_vip_pxd[5]"),
104 PINCTRL_PIN(82, "x_vip_pxd[4]"),
105 PINCTRL_PIN(83, "x_vip_pxd[3]"),
106 PINCTRL_PIN(84, "x_vip_pxd[2]"),
107 PINCTRL_PIN(85, "x_vip_pxd[1]"),
108 PINCTRL_PIN(86, "x_vip_pxd[0]"),
109 PINCTRL_PIN(87, "x_vip_vsync"),
110 PINCTRL_PIN(88, "x_vip_hsync"),
111 PINCTRL_PIN(89, "x_vip_pxclk"),
112 PINCTRL_PIN(90, "x_sda_0"),
113 PINCTRL_PIN(91, "x_scl_0"),
114 PINCTRL_PIN(92, "x_df_ry_by"),
115 PINCTRL_PIN(93, "x_df_cs_b[1]"),
116 PINCTRL_PIN(94, "x_df_cs_b[0]"),
117 PINCTRL_PIN(95, "x_l_pclk"),
118
119 PINCTRL_PIN(96, "x_l_lck"),
120 PINCTRL_PIN(97, "x_l_fck"),
121 PINCTRL_PIN(98, "x_l_de"),
122 PINCTRL_PIN(99, "x_ldd[0]"),
123 PINCTRL_PIN(100, "x_ldd[1]"),
124 PINCTRL_PIN(101, "x_ldd[2]"),
125 PINCTRL_PIN(102, "x_ldd[3]"),
126 PINCTRL_PIN(103, "x_ldd[4]"),
127 PINCTRL_PIN(104, "x_ldd[5]"),
128 PINCTRL_PIN(105, "x_ldd[6]"),
129 PINCTRL_PIN(106, "x_ldd[7]"),
130 PINCTRL_PIN(107, "x_ldd[8]"),
131 PINCTRL_PIN(108, "x_ldd[9]"),
132 PINCTRL_PIN(109, "x_ldd[10]"),
133 PINCTRL_PIN(110, "x_ldd[11]"),
134 PINCTRL_PIN(111, "x_ldd[12]"),
135 PINCTRL_PIN(112, "x_ldd[13]"),
136 PINCTRL_PIN(113, "x_ldd[14]"),
137 PINCTRL_PIN(114, "x_ldd[15]"),
138 };
139
140 /**
141 * @dev: a pointer back to containing device
142 * @virtbase: the offset to the controller in virtual memory
143 */
144 struct sirfsoc_pmx {
145 struct device *dev;
146 struct pinctrl_dev *pmx;
147 void __iomem *gpio_virtbase;
148 void __iomem *rsc_virtbase;
149 };
150
151 /* SIRFSOC_GPIO_PAD_EN set */
152 struct sirfsoc_muxmask {
153 unsigned long group;
154 unsigned long mask;
155 };
156
157 struct sirfsoc_padmux {
158 unsigned long muxmask_counts;
159 const struct sirfsoc_muxmask *muxmask;
160 /* RSC_PIN_MUX set */
161 unsigned long funcmask;
162 unsigned long funcval;
163 };
164
165 /**
166 * struct sirfsoc_pin_group - describes a SiRFprimaII pin group
167 * @name: the name of this specific pin group
168 * @pins: an array of discrete physical pins used in this group, taken
169 * from the driver-local pin enumeration space
170 * @num_pins: the number of pins in this group array, i.e. the number of
171 * elements in .pins so we can iterate over that array
172 */
173 struct sirfsoc_pin_group {
174 const char *name;
175 const unsigned int *pins;
176 const unsigned num_pins;
177 };
178
179 static const struct sirfsoc_muxmask lcd_16bits_sirfsoc_muxmask[] = {
180 {
181 .group = 3,
182 .mask = BIT(0) | BIT(1) | BIT(2) | BIT(3) | BIT(4) | BIT(5) | BIT(6) | BIT(7) | BIT(8) |
183 BIT(9) | BIT(10) | BIT(11) | BIT(12) | BIT(13) | BIT(14) | BIT(15) | BIT(16) |
184 BIT(17) | BIT(18),
185 }, {
186 .group = 2,
187 .mask = BIT(31),
188 },
189 };
190
191 static const struct sirfsoc_padmux lcd_16bits_padmux = {
192 .muxmask_counts = ARRAY_SIZE(lcd_16bits_sirfsoc_muxmask),
193 .muxmask = lcd_16bits_sirfsoc_muxmask,
194 .funcmask = BIT(4),
195 .funcval = 0,
196 };
197
198 static const unsigned lcd_16bits_pins[] = { 95, 96, 97, 98, 99, 100, 101, 102, 103, 104,
199 105, 106, 107, 108, 109, 110, 111, 112, 113, 114 };
200
201 static const struct sirfsoc_muxmask lcd_18bits_muxmask[] = {
202 {
203 .group = 3,
204 .mask = BIT(0) | BIT(1) | BIT(2) | BIT(3) | BIT(4) | BIT(5) | BIT(6) | BIT(7) | BIT(8) |
205 BIT(9) | BIT(10) | BIT(11) | BIT(12) | BIT(13) | BIT(14) | BIT(15) | BIT(16) |
206 BIT(17) | BIT(18),
207 }, {
208 .group = 2,
209 .mask = BIT(31),
210 }, {
211 .group = 0,
212 .mask = BIT(16) | BIT(17),
213 },
214 };
215
216 static const struct sirfsoc_padmux lcd_18bits_padmux = {
217 .muxmask_counts = ARRAY_SIZE(lcd_18bits_muxmask),
218 .muxmask = lcd_18bits_muxmask,
219 .funcmask = BIT(4),
220 .funcval = 0,
221 };
222
223 static const unsigned lcd_18bits_pins[] = { 16, 17, 95, 96, 97, 98, 99, 100, 101, 102, 103, 104,
224 105, 106, 107, 108, 109, 110, 111, 112, 113, 114};
225
226 static const struct sirfsoc_muxmask lcd_24bits_muxmask[] = {
227 {
228 .group = 3,
229 .mask = BIT(0) | BIT(1) | BIT(2) | BIT(3) | BIT(4) | BIT(5) | BIT(6) | BIT(7) | BIT(8) |
230 BIT(9) | BIT(10) | BIT(11) | BIT(12) | BIT(13) | BIT(14) | BIT(15) | BIT(16) |
231 BIT(17) | BIT(18),
232 }, {
233 .group = 2,
234 .mask = BIT(31),
235 }, {
236 .group = 0,
237 .mask = BIT(16) | BIT(17) | BIT(18) | BIT(19) | BIT(20) | BIT(21) | BIT(22) | BIT(23),
238 },
239 };
240
241 static const struct sirfsoc_padmux lcd_24bits_padmux = {
242 .muxmask_counts = ARRAY_SIZE(lcd_24bits_muxmask),
243 .muxmask = lcd_24bits_muxmask,
244 .funcmask = BIT(4),
245 .funcval = 0,
246 };
247
248 static const unsigned lcd_24bits_pins[] = { 16, 17, 18, 19, 20, 21, 22, 23, 95, 96, 97, 98, 99, 100, 101, 102, 103, 104,
249 105, 106, 107, 108, 109, 110, 111, 112, 113, 114 };
250
251 static const struct sirfsoc_muxmask lcdrom_muxmask[] = {
252 {
253 .group = 3,
254 .mask = BIT(0) | BIT(1) | BIT(2) | BIT(3) | BIT(4) | BIT(5) | BIT(6) | BIT(7) | BIT(8) |
255 BIT(9) | BIT(10) | BIT(11) | BIT(12) | BIT(13) | BIT(14) | BIT(15) | BIT(16) |
256 BIT(17) | BIT(18),
257 }, {
258 .group = 2,
259 .mask = BIT(31),
260 }, {
261 .group = 0,
262 .mask = BIT(23),
263 },
264 };
265
266 static const struct sirfsoc_padmux lcdrom_padmux = {
267 .muxmask_counts = ARRAY_SIZE(lcdrom_muxmask),
268 .muxmask = lcdrom_muxmask,
269 .funcmask = BIT(4),
270 .funcval = BIT(4),
271 };
272
273 static const unsigned lcdrom_pins[] = { 23, 95, 96, 97, 98, 99, 100, 101, 102, 103, 104,
274 105, 106, 107, 108, 109, 110, 111, 112, 113, 114 };
275
276 static const struct sirfsoc_muxmask uart0_muxmask[] = {
277 {
278 .group = 2,
279 .mask = BIT(4) | BIT(5),
280 }, {
281 .group = 1,
282 .mask = BIT(23) | BIT(28),
283 },
284 };
285
286 static const struct sirfsoc_padmux uart0_padmux = {
287 .muxmask_counts = ARRAY_SIZE(uart0_muxmask),
288 .muxmask = uart0_muxmask,
289 .funcmask = BIT(9),
290 .funcval = BIT(9),
291 };
292
293 static const unsigned uart0_pins[] = { 55, 60, 68, 69 };
294
295 static const struct sirfsoc_muxmask uart0_nostreamctrl_muxmask[] = {
296 {
297 .group = 2,
298 .mask = BIT(4) | BIT(5),
299 },
300 };
301
302 static const struct sirfsoc_padmux uart0_nostreamctrl_padmux = {
303 .muxmask_counts = ARRAY_SIZE(uart0_nostreamctrl_muxmask),
304 .muxmask = uart0_nostreamctrl_muxmask,
305 };
306
307 static const unsigned uart0_nostreamctrl_pins[] = { 68, 39 };
308
309 static const struct sirfsoc_muxmask uart1_muxmask[] = {
310 {
311 .group = 1,
312 .mask = BIT(15) | BIT(17),
313 },
314 };
315
316 static const struct sirfsoc_padmux uart1_padmux = {
317 .muxmask_counts = ARRAY_SIZE(uart1_muxmask),
318 .muxmask = uart1_muxmask,
319 };
320
321 static const unsigned uart1_pins[] = { 47, 49 };
322
323 static const struct sirfsoc_muxmask uart2_muxmask[] = {
324 {
325 .group = 1,
326 .mask = BIT(16) | BIT(18) | BIT(24) | BIT(27),
327 },
328 };
329
330 static const struct sirfsoc_padmux uart2_padmux = {
331 .muxmask_counts = ARRAY_SIZE(uart2_muxmask),
332 .muxmask = uart2_muxmask,
333 .funcmask = BIT(10),
334 .funcval = BIT(10),
335 };
336
337 static const unsigned uart2_pins[] = { 48, 50, 56, 59 };
338
339 static const struct sirfsoc_muxmask uart2_nostreamctrl_muxmask[] = {
340 {
341 .group = 1,
342 .mask = BIT(16) | BIT(18),
343 },
344 };
345
346 static const struct sirfsoc_padmux uart2_nostreamctrl_padmux = {
347 .muxmask_counts = ARRAY_SIZE(uart2_nostreamctrl_muxmask),
348 .muxmask = uart2_nostreamctrl_muxmask,
349 };
350
351 static const unsigned uart2_nostreamctrl_pins[] = { 48, 50 };
352
353 static const struct sirfsoc_muxmask sdmmc3_muxmask[] = {
354 {
355 .group = 0,
356 .mask = BIT(30) | BIT(31),
357 }, {
358 .group = 1,
359 .mask = BIT(0) | BIT(1) | BIT(2) | BIT(3),
360 },
361 };
362
363 static const struct sirfsoc_padmux sdmmc3_padmux = {
364 .muxmask_counts = ARRAY_SIZE(sdmmc3_muxmask),
365 .muxmask = sdmmc3_muxmask,
366 .funcmask = BIT(7),
367 .funcval = 0,
368 };
369
370 static const unsigned sdmmc3_pins[] = { 30, 31, 32, 33, 34, 35 };
371
372 static const struct sirfsoc_muxmask spi0_muxmask[] = {
373 {
374 .group = 1,
375 .mask = BIT(0) | BIT(1) | BIT(2) | BIT(3),
376 },
377 };
378
379 static const struct sirfsoc_padmux spi0_padmux = {
380 .muxmask_counts = ARRAY_SIZE(spi0_muxmask),
381 .muxmask = spi0_muxmask,
382 .funcmask = BIT(7),
383 .funcval = BIT(7),
384 };
385
386 static const unsigned spi0_pins[] = { 32, 33, 34, 35 };
387
388 static const struct sirfsoc_muxmask sdmmc4_muxmask[] = {
389 {
390 .group = 1,
391 .mask = BIT(4) | BIT(5) | BIT(6) | BIT(7) | BIT(8) | BIT(9),
392 },
393 };
394
395 static const struct sirfsoc_padmux sdmmc4_padmux = {
396 .muxmask_counts = ARRAY_SIZE(sdmmc4_muxmask),
397 .muxmask = sdmmc4_muxmask,
398 };
399
400 static const unsigned sdmmc4_pins[] = { 36, 37, 38, 39, 40, 41 };
401
402 static const struct sirfsoc_muxmask cko1_muxmask[] = {
403 {
404 .group = 1,
405 .mask = BIT(10),
406 },
407 };
408
409 static const struct sirfsoc_padmux cko1_padmux = {
410 .muxmask_counts = ARRAY_SIZE(cko1_muxmask),
411 .muxmask = cko1_muxmask,
412 .funcmask = BIT(3),
413 .funcval = 0,
414 };
415
416 static const unsigned cko1_pins[] = { 42 };
417
418 static const struct sirfsoc_muxmask i2s_muxmask[] = {
419 {
420 .group = 1,
421 .mask =
422 BIT(10) | BIT(11) | BIT(12) | BIT(13) | BIT(14) | BIT(19)
423 | BIT(23) | BIT(28),
424 },
425 };
426
427 static const struct sirfsoc_padmux i2s_padmux = {
428 .muxmask_counts = ARRAY_SIZE(i2s_muxmask),
429 .muxmask = i2s_muxmask,
430 .funcmask = BIT(3) | BIT(9),
431 .funcval = BIT(3),
432 };
433
434 static const unsigned i2s_pins[] = { 42, 43, 44, 45, 46, 51, 55, 60 };
435
436 static const struct sirfsoc_muxmask ac97_muxmask[] = {
437 {
438 .group = 1,
439 .mask = BIT(11) | BIT(12) | BIT(13) | BIT(14),
440 },
441 };
442
443 static const struct sirfsoc_padmux ac97_padmux = {
444 .muxmask_counts = ARRAY_SIZE(ac97_muxmask),
445 .muxmask = ac97_muxmask,
446 .funcmask = BIT(8),
447 .funcval = 0,
448 };
449
450 static const unsigned ac97_pins[] = { 33, 34, 35, 36 };
451
452 static const struct sirfsoc_muxmask spi1_muxmask[] = {
453 {
454 .group = 1,
455 .mask = BIT(11) | BIT(12) | BIT(13) | BIT(14),
456 },
457 };
458
459 static const struct sirfsoc_padmux spi1_padmux = {
460 .muxmask_counts = ARRAY_SIZE(spi1_muxmask),
461 .muxmask = spi1_muxmask,
462 .funcmask = BIT(8),
463 .funcval = BIT(8),
464 };
465
466 static const unsigned spi1_pins[] = { 43, 44, 45, 46 };
467
468 static const struct sirfsoc_muxmask sdmmc1_muxmask[] = {
469 {
470 .group = 0,
471 .mask = BIT(27) | BIT(28) | BIT(29),
472 },
473 };
474
475 static const struct sirfsoc_padmux sdmmc1_padmux = {
476 .muxmask_counts = ARRAY_SIZE(sdmmc1_muxmask),
477 .muxmask = sdmmc1_muxmask,
478 };
479
480 static const unsigned sdmmc1_pins[] = { 27, 28, 29 };
481
482 static const struct sirfsoc_muxmask gps_muxmask[] = {
483 {
484 .group = 0,
485 .mask = BIT(24) | BIT(25) | BIT(26),
486 },
487 };
488
489 static const struct sirfsoc_padmux gps_padmux = {
490 .muxmask_counts = ARRAY_SIZE(gps_muxmask),
491 .muxmask = gps_muxmask,
492 .funcmask = BIT(12) | BIT(13) | BIT(14),
493 .funcval = BIT(12),
494 };
495
496 static const unsigned gps_pins[] = { 24, 25, 26 };
497
498 static const struct sirfsoc_muxmask sdmmc5_muxmask[] = {
499 {
500 .group = 0,
501 .mask = BIT(24) | BIT(25) | BIT(26),
502 }, {
503 .group = 1,
504 .mask = BIT(29),
505 }, {
506 .group = 2,
507 .mask = BIT(0) | BIT(1),
508 },
509 };
510
511 static const struct sirfsoc_padmux sdmmc5_padmux = {
512 .muxmask_counts = ARRAY_SIZE(sdmmc5_muxmask),
513 .muxmask = sdmmc5_muxmask,
514 .funcmask = BIT(13) | BIT(14),
515 .funcval = BIT(13) | BIT(14),
516 };
517
518 static const unsigned sdmmc5_pins[] = { 24, 25, 26, 61, 64, 65 };
519
520 static const struct sirfsoc_muxmask usp0_muxmask[] = {
521 {
522 .group = 1,
523 .mask = BIT(19) | BIT(20) | BIT(21) | BIT(22) | BIT(23),
524 },
525 };
526
527 static const struct sirfsoc_padmux usp0_padmux = {
528 .muxmask_counts = ARRAY_SIZE(usp0_muxmask),
529 .muxmask = usp0_muxmask,
530 .funcmask = BIT(1) | BIT(2) | BIT(6) | BIT(9),
531 .funcval = 0,
532 };
533
534 static const unsigned usp0_pins[] = { 51, 52, 53, 54, 55 };
535
536 static const struct sirfsoc_muxmask usp1_muxmask[] = {
537 {
538 .group = 1,
539 .mask = BIT(24) | BIT(25) | BIT(26) | BIT(27) | BIT(28),
540 },
541 };
542
543 static const struct sirfsoc_padmux usp1_padmux = {
544 .muxmask_counts = ARRAY_SIZE(usp1_muxmask),
545 .muxmask = usp1_muxmask,
546 .funcmask = BIT(1) | BIT(9) | BIT(10) | BIT(11),
547 .funcval = 0,
548 };
549
550 static const unsigned usp1_pins[] = { 56, 57, 58, 59, 60 };
551
552 static const struct sirfsoc_muxmask usp2_muxmask[] = {
553 {
554 .group = 1,
555 .mask = BIT(29) | BIT(30) | BIT(31),
556 }, {
557 .group = 2,
558 .mask = BIT(0) | BIT(1),
559 },
560 };
561
562 static const struct sirfsoc_padmux usp2_padmux = {
563 .muxmask_counts = ARRAY_SIZE(usp2_muxmask),
564 .muxmask = usp2_muxmask,
565 .funcmask = BIT(13) | BIT(14),
566 .funcval = 0,
567 };
568
569 static const unsigned usp2_pins[] = { 61, 62, 63, 64, 65 };
570
571 static const struct sirfsoc_muxmask nand_muxmask[] = {
572 {
573 .group = 2,
574 .mask = BIT(2) | BIT(3) | BIT(28) | BIT(29) | BIT(30),
575 },
576 };
577
578 static const struct sirfsoc_padmux nand_padmux = {
579 .muxmask_counts = ARRAY_SIZE(nand_muxmask),
580 .muxmask = nand_muxmask,
581 .funcmask = BIT(5),
582 .funcval = 0,
583 };
584
585 static const unsigned nand_pins[] = { 64, 65, 92, 93, 94 };
586
587 static const struct sirfsoc_padmux sdmmc0_padmux = {
588 .muxmask_counts = 0,
589 .funcmask = BIT(5),
590 .funcval = 0,
591 };
592
593 static const unsigned sdmmc0_pins[] = { };
594
595 static const struct sirfsoc_muxmask sdmmc2_muxmask[] = {
596 {
597 .group = 2,
598 .mask = BIT(2) | BIT(3),
599 },
600 };
601
602 static const struct sirfsoc_padmux sdmmc2_padmux = {
603 .muxmask_counts = ARRAY_SIZE(sdmmc2_muxmask),
604 .muxmask = sdmmc2_muxmask,
605 .funcmask = BIT(5),
606 .funcval = BIT(5),
607 };
608
609 static const unsigned sdmmc2_pins[] = { 66, 67 };
610
611 static const struct sirfsoc_muxmask cko0_muxmask[] = {
612 {
613 .group = 2,
614 .mask = BIT(14),
615 },
616 };
617
618 static const struct sirfsoc_padmux cko0_padmux = {
619 .muxmask_counts = ARRAY_SIZE(cko0_muxmask),
620 .muxmask = cko0_muxmask,
621 };
622
623 static const unsigned cko0_pins[] = { 78 };
624
625 static const struct sirfsoc_muxmask vip_muxmask[] = {
626 {
627 .group = 2,
628 .mask = BIT(15) | BIT(16) | BIT(17) | BIT(18) | BIT(19)
629 | BIT(20) | BIT(21) | BIT(22) | BIT(23) | BIT(24) |
630 BIT(25),
631 },
632 };
633
634 static const struct sirfsoc_padmux vip_padmux = {
635 .muxmask_counts = ARRAY_SIZE(vip_muxmask),
636 .muxmask = vip_muxmask,
637 .funcmask = BIT(0),
638 .funcval = 0,
639 };
640
641 static const unsigned vip_pins[] = { 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89 };
642
643 static const struct sirfsoc_muxmask i2c0_muxmask[] = {
644 {
645 .group = 2,
646 .mask = BIT(26) | BIT(27),
647 },
648 };
649
650 static const struct sirfsoc_padmux i2c0_padmux = {
651 .muxmask_counts = ARRAY_SIZE(i2c0_muxmask),
652 .muxmask = i2c0_muxmask,
653 };
654
655 static const unsigned i2c0_pins[] = { 90, 91 };
656
657 static const struct sirfsoc_muxmask i2c1_muxmask[] = {
658 {
659 .group = 0,
660 .mask = BIT(13) | BIT(15),
661 },
662 };
663
664 static const struct sirfsoc_padmux i2c1_padmux = {
665 .muxmask_counts = ARRAY_SIZE(i2c1_muxmask),
666 .muxmask = i2c1_muxmask,
667 };
668
669 static const unsigned i2c1_pins[] = { 13, 15 };
670
671 static const struct sirfsoc_muxmask viprom_muxmask[] = {
672 {
673 .group = 2,
674 .mask = BIT(15) | BIT(16) | BIT(17) | BIT(18) | BIT(19)
675 | BIT(20) | BIT(21) | BIT(22) | BIT(23) | BIT(24) |
676 BIT(25),
677 }, {
678 .group = 0,
679 .mask = BIT(12),
680 },
681 };
682
683 static const struct sirfsoc_padmux viprom_padmux = {
684 .muxmask_counts = ARRAY_SIZE(viprom_muxmask),
685 .muxmask = viprom_muxmask,
686 .funcmask = BIT(0),
687 .funcval = BIT(0),
688 };
689
690 static const unsigned viprom_pins[] = { 12, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89 };
691
692 static const struct sirfsoc_muxmask pwm0_muxmask[] = {
693 {
694 .group = 0,
695 .mask = BIT(4),
696 },
697 };
698
699 static const struct sirfsoc_padmux pwm0_padmux = {
700 .muxmask_counts = ARRAY_SIZE(pwm0_muxmask),
701 .muxmask = pwm0_muxmask,
702 .funcmask = BIT(12),
703 .funcval = 0,
704 };
705
706 static const unsigned pwm0_pins[] = { 4 };
707
708 static const struct sirfsoc_muxmask pwm1_muxmask[] = {
709 {
710 .group = 0,
711 .mask = BIT(5),
712 },
713 };
714
715 static const struct sirfsoc_padmux pwm1_padmux = {
716 .muxmask_counts = ARRAY_SIZE(pwm1_muxmask),
717 .muxmask = pwm1_muxmask,
718 };
719
720 static const unsigned pwm1_pins[] = { 5 };
721
722 static const struct sirfsoc_muxmask pwm2_muxmask[] = {
723 {
724 .group = 0,
725 .mask = BIT(6),
726 },
727 };
728
729 static const struct sirfsoc_padmux pwm2_padmux = {
730 .muxmask_counts = ARRAY_SIZE(pwm2_muxmask),
731 .muxmask = pwm2_muxmask,
732 };
733
734 static const unsigned pwm2_pins[] = { 6 };
735
736 static const struct sirfsoc_muxmask pwm3_muxmask[] = {
737 {
738 .group = 0,
739 .mask = BIT(7),
740 },
741 };
742
743 static const struct sirfsoc_padmux pwm3_padmux = {
744 .muxmask_counts = ARRAY_SIZE(pwm3_muxmask),
745 .muxmask = pwm3_muxmask,
746 };
747
748 static const unsigned pwm3_pins[] = { 7 };
749
750 static const struct sirfsoc_muxmask warm_rst_muxmask[] = {
751 {
752 .group = 0,
753 .mask = BIT(8),
754 },
755 };
756
757 static const struct sirfsoc_padmux warm_rst_padmux = {
758 .muxmask_counts = ARRAY_SIZE(warm_rst_muxmask),
759 .muxmask = warm_rst_muxmask,
760 };
761
762 static const unsigned warm_rst_pins[] = { 8 };
763
764 static const struct sirfsoc_muxmask usb0_utmi_drvbus_muxmask[] = {
765 {
766 .group = 1,
767 .mask = BIT(22),
768 },
769 };
770 static const struct sirfsoc_padmux usb0_utmi_drvbus_padmux = {
771 .muxmask_counts = ARRAY_SIZE(usb0_utmi_drvbus_muxmask),
772 .muxmask = usb0_utmi_drvbus_muxmask,
773 .funcmask = BIT(6),
774 .funcval = BIT(6), /* refer to PAD_UTMI_DRVVBUS0_ENABLE */
775 };
776
777 static const unsigned usb0_utmi_drvbus_pins[] = { 54 };
778
779 static const struct sirfsoc_muxmask usb1_utmi_drvbus_muxmask[] = {
780 {
781 .group = 1,
782 .mask = BIT(27),
783 },
784 };
785
786 static const struct sirfsoc_padmux usb1_utmi_drvbus_padmux = {
787 .muxmask_counts = ARRAY_SIZE(usb1_utmi_drvbus_muxmask),
788 .muxmask = usb1_utmi_drvbus_muxmask,
789 .funcmask = BIT(11),
790 .funcval = BIT(11), /* refer to PAD_UTMI_DRVVBUS1_ENABLE */
791 };
792
793 static const unsigned usb1_utmi_drvbus_pins[] = { 59 };
794
795 static const struct sirfsoc_muxmask pulse_count_muxmask[] = {
796 {
797 .group = 0,
798 .mask = BIT(9) | BIT(10) | BIT(11),
799 },
800 };
801
802 static const struct sirfsoc_padmux pulse_count_padmux = {
803 .muxmask_counts = ARRAY_SIZE(pulse_count_muxmask),
804 .muxmask = pulse_count_muxmask,
805 };
806
807 static const unsigned pulse_count_pins[] = { 9, 10, 11 };
808
809 #define SIRFSOC_PIN_GROUP(n, p) \
810 { \
811 .name = n, \
812 .pins = p, \
813 .num_pins = ARRAY_SIZE(p), \
814 }
815
816 static const struct sirfsoc_pin_group sirfsoc_pin_groups[] = {
817 SIRFSOC_PIN_GROUP("lcd_16bitsgrp", lcd_16bits_pins),
818 SIRFSOC_PIN_GROUP("lcd_18bitsgrp", lcd_18bits_pins),
819 SIRFSOC_PIN_GROUP("lcd_24bitsgrp", lcd_24bits_pins),
820 SIRFSOC_PIN_GROUP("lcdrom_grp", lcdrom_pins),
821 SIRFSOC_PIN_GROUP("uart0grp", uart0_pins),
822 SIRFSOC_PIN_GROUP("uart1grp", uart1_pins),
823 SIRFSOC_PIN_GROUP("uart2grp", uart2_pins),
824 SIRFSOC_PIN_GROUP("uart2_nostreamctrlgrp", uart2_nostreamctrl_pins),
825 SIRFSOC_PIN_GROUP("usp0grp", usp0_pins),
826 SIRFSOC_PIN_GROUP("usp1grp", usp1_pins),
827 SIRFSOC_PIN_GROUP("usp2grp", usp2_pins),
828 SIRFSOC_PIN_GROUP("i2c0grp", i2c0_pins),
829 SIRFSOC_PIN_GROUP("i2c1grp", i2c1_pins),
830 SIRFSOC_PIN_GROUP("pwm0grp", pwm0_pins),
831 SIRFSOC_PIN_GROUP("pwm1grp", pwm1_pins),
832 SIRFSOC_PIN_GROUP("pwm2grp", pwm2_pins),
833 SIRFSOC_PIN_GROUP("pwm3grp", pwm3_pins),
834 SIRFSOC_PIN_GROUP("vipgrp", vip_pins),
835 SIRFSOC_PIN_GROUP("vipromgrp", viprom_pins),
836 SIRFSOC_PIN_GROUP("warm_rstgrp", warm_rst_pins),
837 SIRFSOC_PIN_GROUP("cko0_rstgrp", cko0_pins),
838 SIRFSOC_PIN_GROUP("cko1_rstgrp", cko1_pins),
839 SIRFSOC_PIN_GROUP("sdmmc0grp", sdmmc0_pins),
840 SIRFSOC_PIN_GROUP("sdmmc1grp", sdmmc1_pins),
841 SIRFSOC_PIN_GROUP("sdmmc2grp", sdmmc2_pins),
842 SIRFSOC_PIN_GROUP("sdmmc3grp", sdmmc3_pins),
843 SIRFSOC_PIN_GROUP("sdmmc4grp", sdmmc4_pins),
844 SIRFSOC_PIN_GROUP("sdmmc5grp", sdmmc5_pins),
845 SIRFSOC_PIN_GROUP("usb0_utmi_drvbusgrp", usb0_utmi_drvbus_pins),
846 SIRFSOC_PIN_GROUP("usb1_utmi_drvbusgrp", usb1_utmi_drvbus_pins),
847 SIRFSOC_PIN_GROUP("pulse_countgrp", pulse_count_pins),
848 SIRFSOC_PIN_GROUP("i2sgrp", i2s_pins),
849 SIRFSOC_PIN_GROUP("ac97grp", ac97_pins),
850 SIRFSOC_PIN_GROUP("nandgrp", nand_pins),
851 SIRFSOC_PIN_GROUP("spi0grp", spi0_pins),
852 SIRFSOC_PIN_GROUP("spi1grp", spi1_pins),
853 SIRFSOC_PIN_GROUP("gpsgrp", gps_pins),
854 };
855
sirfsoc_list_groups(struct pinctrl_dev * pctldev,unsigned selector)856 static int sirfsoc_list_groups(struct pinctrl_dev *pctldev, unsigned selector)
857 {
858 if (selector >= ARRAY_SIZE(sirfsoc_pin_groups))
859 return -EINVAL;
860 return 0;
861 }
862
sirfsoc_get_group_name(struct pinctrl_dev * pctldev,unsigned selector)863 static const char *sirfsoc_get_group_name(struct pinctrl_dev *pctldev,
864 unsigned selector)
865 {
866 if (selector >= ARRAY_SIZE(sirfsoc_pin_groups))
867 return NULL;
868 return sirfsoc_pin_groups[selector].name;
869 }
870
sirfsoc_get_group_pins(struct pinctrl_dev * pctldev,unsigned selector,const unsigned ** pins,unsigned * num_pins)871 static int sirfsoc_get_group_pins(struct pinctrl_dev *pctldev, unsigned selector,
872 const unsigned **pins,
873 unsigned *num_pins)
874 {
875 if (selector >= ARRAY_SIZE(sirfsoc_pin_groups))
876 return -EINVAL;
877 *pins = sirfsoc_pin_groups[selector].pins;
878 *num_pins = sirfsoc_pin_groups[selector].num_pins;
879 return 0;
880 }
881
sirfsoc_pin_dbg_show(struct pinctrl_dev * pctldev,struct seq_file * s,unsigned offset)882 static void sirfsoc_pin_dbg_show(struct pinctrl_dev *pctldev, struct seq_file *s,
883 unsigned offset)
884 {
885 seq_printf(s, " " DRIVER_NAME);
886 }
887
888 static struct pinctrl_ops sirfsoc_pctrl_ops = {
889 .list_groups = sirfsoc_list_groups,
890 .get_group_name = sirfsoc_get_group_name,
891 .get_group_pins = sirfsoc_get_group_pins,
892 .pin_dbg_show = sirfsoc_pin_dbg_show,
893 };
894
895 struct sirfsoc_pmx_func {
896 const char *name;
897 const char * const *groups;
898 const unsigned num_groups;
899 const struct sirfsoc_padmux *padmux;
900 };
901
902 static const char * const lcd_16bitsgrp[] = { "lcd_16bitsgrp" };
903 static const char * const lcd_18bitsgrp[] = { "lcd_18bitsgrp" };
904 static const char * const lcd_24bitsgrp[] = { "lcd_24bitsgrp" };
905 static const char * const lcdromgrp[] = { "lcdromgrp" };
906 static const char * const uart0grp[] = { "uart0grp" };
907 static const char * const uart1grp[] = { "uart1grp" };
908 static const char * const uart2grp[] = { "uart2grp" };
909 static const char * const uart2_nostreamctrlgrp[] = { "uart2_nostreamctrlgrp" };
910 static const char * const usp0grp[] = { "usp0grp" };
911 static const char * const usp1grp[] = { "usp1grp" };
912 static const char * const usp2grp[] = { "usp2grp" };
913 static const char * const i2c0grp[] = { "i2c0grp" };
914 static const char * const i2c1grp[] = { "i2c1grp" };
915 static const char * const pwm0grp[] = { "pwm0grp" };
916 static const char * const pwm1grp[] = { "pwm1grp" };
917 static const char * const pwm2grp[] = { "pwm2grp" };
918 static const char * const pwm3grp[] = { "pwm3grp" };
919 static const char * const vipgrp[] = { "vipgrp" };
920 static const char * const vipromgrp[] = { "vipromgrp" };
921 static const char * const warm_rstgrp[] = { "warm_rstgrp" };
922 static const char * const cko0grp[] = { "cko0grp" };
923 static const char * const cko1grp[] = { "cko1grp" };
924 static const char * const sdmmc0grp[] = { "sdmmc0grp" };
925 static const char * const sdmmc1grp[] = { "sdmmc1grp" };
926 static const char * const sdmmc2grp[] = { "sdmmc2grp" };
927 static const char * const sdmmc3grp[] = { "sdmmc3grp" };
928 static const char * const sdmmc4grp[] = { "sdmmc4grp" };
929 static const char * const sdmmc5grp[] = { "sdmmc5grp" };
930 static const char * const usb0_utmi_drvbusgrp[] = { "usb0_utmi_drvbusgrp" };
931 static const char * const usb1_utmi_drvbusgrp[] = { "usb1_utmi_drvbusgrp" };
932 static const char * const pulse_countgrp[] = { "pulse_countgrp" };
933 static const char * const i2sgrp[] = { "i2sgrp" };
934 static const char * const ac97grp[] = { "ac97grp" };
935 static const char * const nandgrp[] = { "nandgrp" };
936 static const char * const spi0grp[] = { "spi0grp" };
937 static const char * const spi1grp[] = { "spi1grp" };
938 static const char * const gpsgrp[] = { "gpsgrp" };
939
940 #define SIRFSOC_PMX_FUNCTION(n, g, m) \
941 { \
942 .name = n, \
943 .groups = g, \
944 .num_groups = ARRAY_SIZE(g), \
945 .padmux = &m, \
946 }
947
948 static const struct sirfsoc_pmx_func sirfsoc_pmx_functions[] = {
949 SIRFSOC_PMX_FUNCTION("lcd_16bits", lcd_16bitsgrp, lcd_16bits_padmux),
950 SIRFSOC_PMX_FUNCTION("lcd_18bits", lcd_18bitsgrp, lcd_18bits_padmux),
951 SIRFSOC_PMX_FUNCTION("lcd_24bits", lcd_24bitsgrp, lcd_24bits_padmux),
952 SIRFSOC_PMX_FUNCTION("lcdrom", lcdromgrp, lcdrom_padmux),
953 SIRFSOC_PMX_FUNCTION("uart0", uart0grp, uart0_padmux),
954 SIRFSOC_PMX_FUNCTION("uart1", uart1grp, uart1_padmux),
955 SIRFSOC_PMX_FUNCTION("uart2", uart2grp, uart2_padmux),
956 SIRFSOC_PMX_FUNCTION("uart2_nostreamctrl", uart2_nostreamctrlgrp, uart2_nostreamctrl_padmux),
957 SIRFSOC_PMX_FUNCTION("usp0", usp0grp, usp0_padmux),
958 SIRFSOC_PMX_FUNCTION("usp1", usp1grp, usp1_padmux),
959 SIRFSOC_PMX_FUNCTION("usp2", usp2grp, usp2_padmux),
960 SIRFSOC_PMX_FUNCTION("i2c0", i2c0grp, i2c0_padmux),
961 SIRFSOC_PMX_FUNCTION("i2c1", i2c1grp, i2c1_padmux),
962 SIRFSOC_PMX_FUNCTION("pwm0", pwm0grp, pwm0_padmux),
963 SIRFSOC_PMX_FUNCTION("pwm1", pwm1grp, pwm1_padmux),
964 SIRFSOC_PMX_FUNCTION("pwm2", pwm2grp, pwm2_padmux),
965 SIRFSOC_PMX_FUNCTION("pwm3", pwm3grp, pwm3_padmux),
966 SIRFSOC_PMX_FUNCTION("vip", vipgrp, vip_padmux),
967 SIRFSOC_PMX_FUNCTION("viprom", vipromgrp, viprom_padmux),
968 SIRFSOC_PMX_FUNCTION("warm_rst", warm_rstgrp, warm_rst_padmux),
969 SIRFSOC_PMX_FUNCTION("cko0", cko0grp, cko0_padmux),
970 SIRFSOC_PMX_FUNCTION("cko1", cko1grp, cko1_padmux),
971 SIRFSOC_PMX_FUNCTION("sdmmc0", sdmmc0grp, sdmmc0_padmux),
972 SIRFSOC_PMX_FUNCTION("sdmmc1", sdmmc1grp, sdmmc1_padmux),
973 SIRFSOC_PMX_FUNCTION("sdmmc2", sdmmc2grp, sdmmc2_padmux),
974 SIRFSOC_PMX_FUNCTION("sdmmc3", sdmmc3grp, sdmmc3_padmux),
975 SIRFSOC_PMX_FUNCTION("sdmmc4", sdmmc4grp, sdmmc4_padmux),
976 SIRFSOC_PMX_FUNCTION("sdmmc5", sdmmc5grp, sdmmc5_padmux),
977 SIRFSOC_PMX_FUNCTION("usb0_utmi_drvbus", usb0_utmi_drvbusgrp, usb0_utmi_drvbus_padmux),
978 SIRFSOC_PMX_FUNCTION("usb1_utmi_drvbus", usb1_utmi_drvbusgrp, usb1_utmi_drvbus_padmux),
979 SIRFSOC_PMX_FUNCTION("pulse_count", pulse_countgrp, pulse_count_padmux),
980 SIRFSOC_PMX_FUNCTION("i2s", i2sgrp, i2s_padmux),
981 SIRFSOC_PMX_FUNCTION("ac97", ac97grp, ac97_padmux),
982 SIRFSOC_PMX_FUNCTION("nand", nandgrp, nand_padmux),
983 SIRFSOC_PMX_FUNCTION("spi0", spi0grp, spi0_padmux),
984 SIRFSOC_PMX_FUNCTION("spi1", spi1grp, spi1_padmux),
985 SIRFSOC_PMX_FUNCTION("gps", gpsgrp, gps_padmux),
986 };
987
sirfsoc_pinmux_endisable(struct sirfsoc_pmx * spmx,unsigned selector,bool enable)988 static void sirfsoc_pinmux_endisable(struct sirfsoc_pmx *spmx, unsigned selector,
989 bool enable)
990 {
991 int i;
992 const struct sirfsoc_padmux *mux = sirfsoc_pmx_functions[selector].padmux;
993 const struct sirfsoc_muxmask *mask = mux->muxmask;
994
995 for (i = 0; i < mux->muxmask_counts; i++) {
996 u32 muxval;
997 muxval = readl(spmx->gpio_virtbase + SIRFSOC_GPIO_PAD_EN(mask[i].group));
998 if (enable)
999 muxval = muxval & ~mask[i].mask;
1000 else
1001 muxval = muxval | mask[i].mask;
1002 writel(muxval, spmx->gpio_virtbase + SIRFSOC_GPIO_PAD_EN(mask[i].group));
1003 }
1004
1005 if (mux->funcmask && enable) {
1006 u32 func_en_val;
1007 func_en_val =
1008 readl(spmx->rsc_virtbase + SIRFSOC_RSC_PIN_MUX);
1009 func_en_val =
1010 (func_en_val & ~mux->funcmask) | (mux->
1011 funcval);
1012 writel(func_en_val, spmx->rsc_virtbase + SIRFSOC_RSC_PIN_MUX);
1013 }
1014 }
1015
sirfsoc_pinmux_enable(struct pinctrl_dev * pmxdev,unsigned selector,unsigned group)1016 static int sirfsoc_pinmux_enable(struct pinctrl_dev *pmxdev, unsigned selector,
1017 unsigned group)
1018 {
1019 struct sirfsoc_pmx *spmx;
1020
1021 spmx = pinctrl_dev_get_drvdata(pmxdev);
1022 sirfsoc_pinmux_endisable(spmx, selector, true);
1023
1024 return 0;
1025 }
1026
sirfsoc_pinmux_disable(struct pinctrl_dev * pmxdev,unsigned selector,unsigned group)1027 static void sirfsoc_pinmux_disable(struct pinctrl_dev *pmxdev, unsigned selector,
1028 unsigned group)
1029 {
1030 struct sirfsoc_pmx *spmx;
1031
1032 spmx = pinctrl_dev_get_drvdata(pmxdev);
1033 sirfsoc_pinmux_endisable(spmx, selector, false);
1034 }
1035
sirfsoc_pinmux_list_funcs(struct pinctrl_dev * pmxdev,unsigned selector)1036 static int sirfsoc_pinmux_list_funcs(struct pinctrl_dev *pmxdev, unsigned selector)
1037 {
1038 if (selector >= ARRAY_SIZE(sirfsoc_pmx_functions))
1039 return -EINVAL;
1040 return 0;
1041 }
1042
sirfsoc_pinmux_get_func_name(struct pinctrl_dev * pctldev,unsigned selector)1043 static const char *sirfsoc_pinmux_get_func_name(struct pinctrl_dev *pctldev,
1044 unsigned selector)
1045 {
1046 return sirfsoc_pmx_functions[selector].name;
1047 }
1048
sirfsoc_pinmux_get_groups(struct pinctrl_dev * pctldev,unsigned selector,const char * const ** groups,unsigned * const num_groups)1049 static int sirfsoc_pinmux_get_groups(struct pinctrl_dev *pctldev, unsigned selector,
1050 const char * const **groups,
1051 unsigned * const num_groups)
1052 {
1053 *groups = sirfsoc_pmx_functions[selector].groups;
1054 *num_groups = sirfsoc_pmx_functions[selector].num_groups;
1055 return 0;
1056 }
1057
sirfsoc_pinmux_request_gpio(struct pinctrl_dev * pmxdev,struct pinctrl_gpio_range * range,unsigned offset)1058 static int sirfsoc_pinmux_request_gpio(struct pinctrl_dev *pmxdev,
1059 struct pinctrl_gpio_range *range, unsigned offset)
1060 {
1061 struct sirfsoc_pmx *spmx;
1062
1063 int group = range->id;
1064
1065 u32 muxval;
1066
1067 spmx = pinctrl_dev_get_drvdata(pmxdev);
1068
1069 muxval = readl(spmx->gpio_virtbase + SIRFSOC_GPIO_PAD_EN(group));
1070 muxval = muxval | (1 << (offset - range->pin_base));
1071 writel(muxval, spmx->gpio_virtbase + SIRFSOC_GPIO_PAD_EN(group));
1072
1073 return 0;
1074 }
1075
1076 static struct pinmux_ops sirfsoc_pinmux_ops = {
1077 .list_functions = sirfsoc_pinmux_list_funcs,
1078 .enable = sirfsoc_pinmux_enable,
1079 .disable = sirfsoc_pinmux_disable,
1080 .get_function_name = sirfsoc_pinmux_get_func_name,
1081 .get_function_groups = sirfsoc_pinmux_get_groups,
1082 .gpio_request_enable = sirfsoc_pinmux_request_gpio,
1083 };
1084
1085 static struct pinctrl_desc sirfsoc_pinmux_desc = {
1086 .name = DRIVER_NAME,
1087 .pins = sirfsoc_pads,
1088 .npins = ARRAY_SIZE(sirfsoc_pads),
1089 .pctlops = &sirfsoc_pctrl_ops,
1090 .pmxops = &sirfsoc_pinmux_ops,
1091 .owner = THIS_MODULE,
1092 };
1093
1094 /*
1095 * Todo: bind irq_chip to every pinctrl_gpio_range
1096 */
1097 static struct pinctrl_gpio_range sirfsoc_gpio_ranges[] = {
1098 {
1099 .name = "sirfsoc-gpio*",
1100 .id = 0,
1101 .base = 0,
1102 .pin_base = 0,
1103 .npins = 32,
1104 }, {
1105 .name = "sirfsoc-gpio*",
1106 .id = 1,
1107 .base = 32,
1108 .pin_base = 32,
1109 .npins = 32,
1110 }, {
1111 .name = "sirfsoc-gpio*",
1112 .id = 2,
1113 .base = 64,
1114 .pin_base = 64,
1115 .npins = 32,
1116 }, {
1117 .name = "sirfsoc-gpio*",
1118 .id = 3,
1119 .base = 96,
1120 .pin_base = 96,
1121 .npins = 19,
1122 },
1123 };
1124
sirfsoc_rsc_of_iomap(void)1125 static void __iomem *sirfsoc_rsc_of_iomap(void)
1126 {
1127 const struct of_device_id rsc_ids[] = {
1128 { .compatible = "sirf,prima2-rsc" },
1129 {}
1130 };
1131 struct device_node *np;
1132
1133 np = of_find_matching_node(NULL, rsc_ids);
1134 if (!np)
1135 panic("unable to find compatible rsc node in dtb\n");
1136
1137 return of_iomap(np, 0);
1138 }
1139
sirfsoc_pinmux_probe(struct platform_device * pdev)1140 static int __devinit sirfsoc_pinmux_probe(struct platform_device *pdev)
1141 {
1142 int ret;
1143 struct sirfsoc_pmx *spmx;
1144 struct device_node *np = pdev->dev.of_node;
1145 int i;
1146
1147 /* Create state holders etc for this driver */
1148 spmx = devm_kzalloc(&pdev->dev, sizeof(*spmx), GFP_KERNEL);
1149 if (!spmx)
1150 return -ENOMEM;
1151
1152 spmx->dev = &pdev->dev;
1153
1154 platform_set_drvdata(pdev, spmx);
1155
1156 spmx->gpio_virtbase = of_iomap(np, 0);
1157 if (!spmx->gpio_virtbase) {
1158 ret = -ENOMEM;
1159 dev_err(&pdev->dev, "can't map gpio registers\n");
1160 goto out_no_gpio_remap;
1161 }
1162
1163 spmx->rsc_virtbase = sirfsoc_rsc_of_iomap();
1164 if (!spmx->rsc_virtbase) {
1165 ret = -ENOMEM;
1166 dev_err(&pdev->dev, "can't map rsc registers\n");
1167 goto out_no_rsc_remap;
1168 }
1169
1170 /* Now register the pin controller and all pins it handles */
1171 spmx->pmx = pinctrl_register(&sirfsoc_pinmux_desc, &pdev->dev, spmx);
1172 if (!spmx->pmx) {
1173 dev_err(&pdev->dev, "could not register SIRFSOC pinmux driver\n");
1174 ret = -EINVAL;
1175 goto out_no_pmx;
1176 }
1177
1178 for (i = 0; i < ARRAY_SIZE(sirfsoc_gpio_ranges); i++)
1179 pinctrl_add_gpio_range(spmx->pmx, &sirfsoc_gpio_ranges[i]);
1180
1181 dev_info(&pdev->dev, "initialized SIRFSOC pinmux driver\n");
1182
1183 return 0;
1184
1185 out_no_pmx:
1186 iounmap(spmx->rsc_virtbase);
1187 out_no_rsc_remap:
1188 iounmap(spmx->gpio_virtbase);
1189 out_no_gpio_remap:
1190 platform_set_drvdata(pdev, NULL);
1191 devm_kfree(&pdev->dev, spmx);
1192 return ret;
1193 }
1194
1195 static const struct of_device_id pinmux_ids[] = {
1196 { .compatible = "sirf,prima2-gpio-pinmux" },
1197 {}
1198 };
1199
1200 static struct platform_driver sirfsoc_pinmux_driver = {
1201 .driver = {
1202 .name = DRIVER_NAME,
1203 .owner = THIS_MODULE,
1204 .of_match_table = pinmux_ids,
1205 },
1206 .probe = sirfsoc_pinmux_probe,
1207 };
1208
sirfsoc_pinmux_init(void)1209 static int __init sirfsoc_pinmux_init(void)
1210 {
1211 return platform_driver_register(&sirfsoc_pinmux_driver);
1212 }
1213 arch_initcall(sirfsoc_pinmux_init);
1214
1215 MODULE_AUTHOR("Rongjun Ying <rongjun.ying@csr.com>, "
1216 "Barry Song <baohua.song@csr.com>");
1217 MODULE_DESCRIPTION("SIRFSOC pin control driver");
1218 MODULE_LICENSE("GPL");
1219