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/irq.h>
12 #include <linux/platform_device.h>
13 #include <linux/io.h>
14 #include <linux/slab.h>
15 #include <linux/err.h>
16 #include <linux/irqdomain.h>
17 #include <linux/irqchip/chained_irq.h>
18 #include <linux/pinctrl/pinctrl.h>
19 #include <linux/pinctrl/pinmux.h>
20 #include <linux/pinctrl/consumer.h>
21 #include <linux/pinctrl/machine.h>
22 #include <linux/of.h>
23 #include <linux/of_address.h>
24 #include <linux/of_device.h>
25 #include <linux/of_platform.h>
26 #include <linux/bitops.h>
27 #include <linux/gpio.h>
28 #include <linux/of_gpio.h>
29
30 #define DRIVER_NAME "pinmux-sirf"
31
32 #define SIRFSOC_NUM_PADS 622
33 #define SIRFSOC_RSC_PIN_MUX 0x4
34
35 #define SIRFSOC_GPIO_PAD_EN(g) ((g)*0x100 + 0x84)
36 #define SIRFSOC_GPIO_PAD_EN_CLR(g) ((g)*0x100 + 0x90)
37 #define SIRFSOC_GPIO_CTRL(g, i) ((g)*0x100 + (i)*4)
38 #define SIRFSOC_GPIO_DSP_EN0 (0x80)
39 #define SIRFSOC_GPIO_INT_STATUS(g) ((g)*0x100 + 0x8C)
40
41 #define SIRFSOC_GPIO_CTL_INTR_LOW_MASK 0x1
42 #define SIRFSOC_GPIO_CTL_INTR_HIGH_MASK 0x2
43 #define SIRFSOC_GPIO_CTL_INTR_TYPE_MASK 0x4
44 #define SIRFSOC_GPIO_CTL_INTR_EN_MASK 0x8
45 #define SIRFSOC_GPIO_CTL_INTR_STS_MASK 0x10
46 #define SIRFSOC_GPIO_CTL_OUT_EN_MASK 0x20
47 #define SIRFSOC_GPIO_CTL_DATAOUT_MASK 0x40
48 #define SIRFSOC_GPIO_CTL_DATAIN_MASK 0x80
49 #define SIRFSOC_GPIO_CTL_PULL_MASK 0x100
50 #define SIRFSOC_GPIO_CTL_PULL_HIGH 0x200
51 #define SIRFSOC_GPIO_CTL_DSP_INT 0x400
52
53 #define SIRFSOC_GPIO_NO_OF_BANKS 5
54 #define SIRFSOC_GPIO_BANK_SIZE 32
55 #define SIRFSOC_GPIO_NUM(bank, index) (((bank)*(32)) + (index))
56
57 struct sirfsoc_gpio_bank {
58 struct of_mm_gpio_chip chip;
59 struct irq_domain *domain;
60 int id;
61 int parent_irq;
62 spinlock_t lock;
63 bool is_marco; /* for marco, some registers are different with prima2 */
64 };
65
66 static struct sirfsoc_gpio_bank sgpio_bank[SIRFSOC_GPIO_NO_OF_BANKS];
67 static DEFINE_SPINLOCK(sgpio_lock);
68
69 /*
70 * pad list for the pinmux subsystem
71 * refer to CS-131858-DC-6A.xls
72 */
73 static const struct pinctrl_pin_desc sirfsoc_pads[] = {
74 PINCTRL_PIN(0, "gpio0-0"),
75 PINCTRL_PIN(1, "gpio0-1"),
76 PINCTRL_PIN(2, "gpio0-2"),
77 PINCTRL_PIN(3, "gpio0-3"),
78 PINCTRL_PIN(4, "pwm0"),
79 PINCTRL_PIN(5, "pwm1"),
80 PINCTRL_PIN(6, "pwm2"),
81 PINCTRL_PIN(7, "pwm3"),
82 PINCTRL_PIN(8, "warm_rst_b"),
83 PINCTRL_PIN(9, "odo_0"),
84 PINCTRL_PIN(10, "odo_1"),
85 PINCTRL_PIN(11, "dr_dir"),
86 PINCTRL_PIN(12, "viprom_fa"),
87 PINCTRL_PIN(13, "scl_1"),
88 PINCTRL_PIN(14, "ntrst"),
89 PINCTRL_PIN(15, "sda_1"),
90 PINCTRL_PIN(16, "x_ldd[16]"),
91 PINCTRL_PIN(17, "x_ldd[17]"),
92 PINCTRL_PIN(18, "x_ldd[18]"),
93 PINCTRL_PIN(19, "x_ldd[19]"),
94 PINCTRL_PIN(20, "x_ldd[20]"),
95 PINCTRL_PIN(21, "x_ldd[21]"),
96 PINCTRL_PIN(22, "x_ldd[22]"),
97 PINCTRL_PIN(23, "x_ldd[23], lcdrom_frdy"),
98 PINCTRL_PIN(24, "gps_sgn"),
99 PINCTRL_PIN(25, "gps_mag"),
100 PINCTRL_PIN(26, "gps_clk"),
101 PINCTRL_PIN(27, "sd_cd_b_1"),
102 PINCTRL_PIN(28, "sd_vcc_on_1"),
103 PINCTRL_PIN(29, "sd_wp_b_1"),
104 PINCTRL_PIN(30, "sd_clk_3"),
105 PINCTRL_PIN(31, "sd_cmd_3"),
106
107 PINCTRL_PIN(32, "x_sd_dat_3[0]"),
108 PINCTRL_PIN(33, "x_sd_dat_3[1]"),
109 PINCTRL_PIN(34, "x_sd_dat_3[2]"),
110 PINCTRL_PIN(35, "x_sd_dat_3[3]"),
111 PINCTRL_PIN(36, "x_sd_clk_4"),
112 PINCTRL_PIN(37, "x_sd_cmd_4"),
113 PINCTRL_PIN(38, "x_sd_dat_4[0]"),
114 PINCTRL_PIN(39, "x_sd_dat_4[1]"),
115 PINCTRL_PIN(40, "x_sd_dat_4[2]"),
116 PINCTRL_PIN(41, "x_sd_dat_4[3]"),
117 PINCTRL_PIN(42, "x_cko_1"),
118 PINCTRL_PIN(43, "x_ac97_bit_clk"),
119 PINCTRL_PIN(44, "x_ac97_dout"),
120 PINCTRL_PIN(45, "x_ac97_din"),
121 PINCTRL_PIN(46, "x_ac97_sync"),
122 PINCTRL_PIN(47, "x_txd_1"),
123 PINCTRL_PIN(48, "x_txd_2"),
124 PINCTRL_PIN(49, "x_rxd_1"),
125 PINCTRL_PIN(50, "x_rxd_2"),
126 PINCTRL_PIN(51, "x_usclk_0"),
127 PINCTRL_PIN(52, "x_utxd_0"),
128 PINCTRL_PIN(53, "x_urxd_0"),
129 PINCTRL_PIN(54, "x_utfs_0"),
130 PINCTRL_PIN(55, "x_urfs_0"),
131 PINCTRL_PIN(56, "x_usclk_1"),
132 PINCTRL_PIN(57, "x_utxd_1"),
133 PINCTRL_PIN(58, "x_urxd_1"),
134 PINCTRL_PIN(59, "x_utfs_1"),
135 PINCTRL_PIN(60, "x_urfs_1"),
136 PINCTRL_PIN(61, "x_usclk_2"),
137 PINCTRL_PIN(62, "x_utxd_2"),
138 PINCTRL_PIN(63, "x_urxd_2"),
139
140 PINCTRL_PIN(64, "x_utfs_2"),
141 PINCTRL_PIN(65, "x_urfs_2"),
142 PINCTRL_PIN(66, "x_df_we_b"),
143 PINCTRL_PIN(67, "x_df_re_b"),
144 PINCTRL_PIN(68, "x_txd_0"),
145 PINCTRL_PIN(69, "x_rxd_0"),
146 PINCTRL_PIN(78, "x_cko_0"),
147 PINCTRL_PIN(79, "x_vip_pxd[7]"),
148 PINCTRL_PIN(80, "x_vip_pxd[6]"),
149 PINCTRL_PIN(81, "x_vip_pxd[5]"),
150 PINCTRL_PIN(82, "x_vip_pxd[4]"),
151 PINCTRL_PIN(83, "x_vip_pxd[3]"),
152 PINCTRL_PIN(84, "x_vip_pxd[2]"),
153 PINCTRL_PIN(85, "x_vip_pxd[1]"),
154 PINCTRL_PIN(86, "x_vip_pxd[0]"),
155 PINCTRL_PIN(87, "x_vip_vsync"),
156 PINCTRL_PIN(88, "x_vip_hsync"),
157 PINCTRL_PIN(89, "x_vip_pxclk"),
158 PINCTRL_PIN(90, "x_sda_0"),
159 PINCTRL_PIN(91, "x_scl_0"),
160 PINCTRL_PIN(92, "x_df_ry_by"),
161 PINCTRL_PIN(93, "x_df_cs_b[1]"),
162 PINCTRL_PIN(94, "x_df_cs_b[0]"),
163 PINCTRL_PIN(95, "x_l_pclk"),
164
165 PINCTRL_PIN(96, "x_l_lck"),
166 PINCTRL_PIN(97, "x_l_fck"),
167 PINCTRL_PIN(98, "x_l_de"),
168 PINCTRL_PIN(99, "x_ldd[0]"),
169 PINCTRL_PIN(100, "x_ldd[1]"),
170 PINCTRL_PIN(101, "x_ldd[2]"),
171 PINCTRL_PIN(102, "x_ldd[3]"),
172 PINCTRL_PIN(103, "x_ldd[4]"),
173 PINCTRL_PIN(104, "x_ldd[5]"),
174 PINCTRL_PIN(105, "x_ldd[6]"),
175 PINCTRL_PIN(106, "x_ldd[7]"),
176 PINCTRL_PIN(107, "x_ldd[8]"),
177 PINCTRL_PIN(108, "x_ldd[9]"),
178 PINCTRL_PIN(109, "x_ldd[10]"),
179 PINCTRL_PIN(110, "x_ldd[11]"),
180 PINCTRL_PIN(111, "x_ldd[12]"),
181 PINCTRL_PIN(112, "x_ldd[13]"),
182 PINCTRL_PIN(113, "x_ldd[14]"),
183 PINCTRL_PIN(114, "x_ldd[15]"),
184 };
185
186 /**
187 * @dev: a pointer back to containing device
188 * @virtbase: the offset to the controller in virtual memory
189 */
190 struct sirfsoc_pmx {
191 struct device *dev;
192 struct pinctrl_dev *pmx;
193 void __iomem *gpio_virtbase;
194 void __iomem *rsc_virtbase;
195 bool is_marco;
196 };
197
198 /* SIRFSOC_GPIO_PAD_EN set */
199 struct sirfsoc_muxmask {
200 unsigned long group;
201 unsigned long mask;
202 };
203
204 struct sirfsoc_padmux {
205 unsigned long muxmask_counts;
206 const struct sirfsoc_muxmask *muxmask;
207 /* RSC_PIN_MUX set */
208 unsigned long funcmask;
209 unsigned long funcval;
210 };
211
212 /**
213 * struct sirfsoc_pin_group - describes a SiRFprimaII pin group
214 * @name: the name of this specific pin group
215 * @pins: an array of discrete physical pins used in this group, taken
216 * from the driver-local pin enumeration space
217 * @num_pins: the number of pins in this group array, i.e. the number of
218 * elements in .pins so we can iterate over that array
219 */
220 struct sirfsoc_pin_group {
221 const char *name;
222 const unsigned int *pins;
223 const unsigned num_pins;
224 };
225
226 static const struct sirfsoc_muxmask lcd_16bits_sirfsoc_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 };
237
238 static const struct sirfsoc_padmux lcd_16bits_padmux = {
239 .muxmask_counts = ARRAY_SIZE(lcd_16bits_sirfsoc_muxmask),
240 .muxmask = lcd_16bits_sirfsoc_muxmask,
241 .funcmask = BIT(4),
242 .funcval = 0,
243 };
244
245 static const unsigned lcd_16bits_pins[] = { 95, 96, 97, 98, 99, 100, 101, 102, 103, 104,
246 105, 106, 107, 108, 109, 110, 111, 112, 113, 114 };
247
248 static const struct sirfsoc_muxmask lcd_18bits_muxmask[] = {
249 {
250 .group = 3,
251 .mask = BIT(0) | BIT(1) | BIT(2) | BIT(3) | BIT(4) | BIT(5) | BIT(6) | BIT(7) | BIT(8) |
252 BIT(9) | BIT(10) | BIT(11) | BIT(12) | BIT(13) | BIT(14) | BIT(15) | BIT(16) |
253 BIT(17) | BIT(18),
254 }, {
255 .group = 2,
256 .mask = BIT(31),
257 }, {
258 .group = 0,
259 .mask = BIT(16) | BIT(17),
260 },
261 };
262
263 static const struct sirfsoc_padmux lcd_18bits_padmux = {
264 .muxmask_counts = ARRAY_SIZE(lcd_18bits_muxmask),
265 .muxmask = lcd_18bits_muxmask,
266 .funcmask = BIT(4),
267 .funcval = 0,
268 };
269
270 static const unsigned lcd_18bits_pins[] = { 16, 17, 95, 96, 97, 98, 99, 100, 101, 102, 103, 104,
271 105, 106, 107, 108, 109, 110, 111, 112, 113, 114};
272
273 static const struct sirfsoc_muxmask lcd_24bits_muxmask[] = {
274 {
275 .group = 3,
276 .mask = BIT(0) | BIT(1) | BIT(2) | BIT(3) | BIT(4) | BIT(5) | BIT(6) | BIT(7) | BIT(8) |
277 BIT(9) | BIT(10) | BIT(11) | BIT(12) | BIT(13) | BIT(14) | BIT(15) | BIT(16) |
278 BIT(17) | BIT(18),
279 }, {
280 .group = 2,
281 .mask = BIT(31),
282 }, {
283 .group = 0,
284 .mask = BIT(16) | BIT(17) | BIT(18) | BIT(19) | BIT(20) | BIT(21) | BIT(22) | BIT(23),
285 },
286 };
287
288 static const struct sirfsoc_padmux lcd_24bits_padmux = {
289 .muxmask_counts = ARRAY_SIZE(lcd_24bits_muxmask),
290 .muxmask = lcd_24bits_muxmask,
291 .funcmask = BIT(4),
292 .funcval = 0,
293 };
294
295 static const unsigned lcd_24bits_pins[] = { 16, 17, 18, 19, 20, 21, 22, 23, 95, 96, 97, 98, 99, 100, 101, 102, 103, 104,
296 105, 106, 107, 108, 109, 110, 111, 112, 113, 114 };
297
298 static const struct sirfsoc_muxmask lcdrom_muxmask[] = {
299 {
300 .group = 3,
301 .mask = BIT(0) | BIT(1) | BIT(2) | BIT(3) | BIT(4) | BIT(5) | BIT(6) | BIT(7) | BIT(8) |
302 BIT(9) | BIT(10) | BIT(11) | BIT(12) | BIT(13) | BIT(14) | BIT(15) | BIT(16) |
303 BIT(17) | BIT(18),
304 }, {
305 .group = 2,
306 .mask = BIT(31),
307 }, {
308 .group = 0,
309 .mask = BIT(23),
310 },
311 };
312
313 static const struct sirfsoc_padmux lcdrom_padmux = {
314 .muxmask_counts = ARRAY_SIZE(lcdrom_muxmask),
315 .muxmask = lcdrom_muxmask,
316 .funcmask = BIT(4),
317 .funcval = BIT(4),
318 };
319
320 static const unsigned lcdrom_pins[] = { 23, 95, 96, 97, 98, 99, 100, 101, 102, 103, 104,
321 105, 106, 107, 108, 109, 110, 111, 112, 113, 114 };
322
323 static const struct sirfsoc_muxmask uart0_muxmask[] = {
324 {
325 .group = 2,
326 .mask = BIT(4) | BIT(5),
327 }, {
328 .group = 1,
329 .mask = BIT(23) | BIT(28),
330 },
331 };
332
333 static const struct sirfsoc_padmux uart0_padmux = {
334 .muxmask_counts = ARRAY_SIZE(uart0_muxmask),
335 .muxmask = uart0_muxmask,
336 .funcmask = BIT(9),
337 .funcval = BIT(9),
338 };
339
340 static const unsigned uart0_pins[] = { 55, 60, 68, 69 };
341
342 static const struct sirfsoc_muxmask uart0_nostreamctrl_muxmask[] = {
343 {
344 .group = 2,
345 .mask = BIT(4) | BIT(5),
346 },
347 };
348
349 static const struct sirfsoc_padmux uart0_nostreamctrl_padmux = {
350 .muxmask_counts = ARRAY_SIZE(uart0_nostreamctrl_muxmask),
351 .muxmask = uart0_nostreamctrl_muxmask,
352 };
353
354 static const unsigned uart0_nostreamctrl_pins[] = { 68, 39 };
355
356 static const struct sirfsoc_muxmask uart1_muxmask[] = {
357 {
358 .group = 1,
359 .mask = BIT(15) | BIT(17),
360 },
361 };
362
363 static const struct sirfsoc_padmux uart1_padmux = {
364 .muxmask_counts = ARRAY_SIZE(uart1_muxmask),
365 .muxmask = uart1_muxmask,
366 };
367
368 static const unsigned uart1_pins[] = { 47, 49 };
369
370 static const struct sirfsoc_muxmask uart2_muxmask[] = {
371 {
372 .group = 1,
373 .mask = BIT(16) | BIT(18) | BIT(24) | BIT(27),
374 },
375 };
376
377 static const struct sirfsoc_padmux uart2_padmux = {
378 .muxmask_counts = ARRAY_SIZE(uart2_muxmask),
379 .muxmask = uart2_muxmask,
380 .funcmask = BIT(10),
381 .funcval = BIT(10),
382 };
383
384 static const unsigned uart2_pins[] = { 48, 50, 56, 59 };
385
386 static const struct sirfsoc_muxmask uart2_nostreamctrl_muxmask[] = {
387 {
388 .group = 1,
389 .mask = BIT(16) | BIT(18),
390 },
391 };
392
393 static const struct sirfsoc_padmux uart2_nostreamctrl_padmux = {
394 .muxmask_counts = ARRAY_SIZE(uart2_nostreamctrl_muxmask),
395 .muxmask = uart2_nostreamctrl_muxmask,
396 };
397
398 static const unsigned uart2_nostreamctrl_pins[] = { 48, 50 };
399
400 static const struct sirfsoc_muxmask sdmmc3_muxmask[] = {
401 {
402 .group = 0,
403 .mask = BIT(30) | BIT(31),
404 }, {
405 .group = 1,
406 .mask = BIT(0) | BIT(1) | BIT(2) | BIT(3),
407 },
408 };
409
410 static const struct sirfsoc_padmux sdmmc3_padmux = {
411 .muxmask_counts = ARRAY_SIZE(sdmmc3_muxmask),
412 .muxmask = sdmmc3_muxmask,
413 .funcmask = BIT(7),
414 .funcval = 0,
415 };
416
417 static const unsigned sdmmc3_pins[] = { 30, 31, 32, 33, 34, 35 };
418
419 static const struct sirfsoc_muxmask spi0_muxmask[] = {
420 {
421 .group = 1,
422 .mask = BIT(0) | BIT(1) | BIT(2) | BIT(3),
423 },
424 };
425
426 static const struct sirfsoc_padmux spi0_padmux = {
427 .muxmask_counts = ARRAY_SIZE(spi0_muxmask),
428 .muxmask = spi0_muxmask,
429 .funcmask = BIT(7),
430 .funcval = BIT(7),
431 };
432
433 static const unsigned spi0_pins[] = { 32, 33, 34, 35 };
434
435 static const struct sirfsoc_muxmask sdmmc4_muxmask[] = {
436 {
437 .group = 1,
438 .mask = BIT(4) | BIT(5) | BIT(6) | BIT(7) | BIT(8) | BIT(9),
439 },
440 };
441
442 static const struct sirfsoc_padmux sdmmc4_padmux = {
443 .muxmask_counts = ARRAY_SIZE(sdmmc4_muxmask),
444 .muxmask = sdmmc4_muxmask,
445 };
446
447 static const unsigned sdmmc4_pins[] = { 36, 37, 38, 39, 40, 41 };
448
449 static const struct sirfsoc_muxmask cko1_muxmask[] = {
450 {
451 .group = 1,
452 .mask = BIT(10),
453 },
454 };
455
456 static const struct sirfsoc_padmux cko1_padmux = {
457 .muxmask_counts = ARRAY_SIZE(cko1_muxmask),
458 .muxmask = cko1_muxmask,
459 .funcmask = BIT(3),
460 .funcval = 0,
461 };
462
463 static const unsigned cko1_pins[] = { 42 };
464
465 static const struct sirfsoc_muxmask i2s_muxmask[] = {
466 {
467 .group = 1,
468 .mask =
469 BIT(10) | BIT(11) | BIT(12) | BIT(13) | BIT(14) | BIT(19)
470 | BIT(23) | BIT(28),
471 },
472 };
473
474 static const struct sirfsoc_padmux i2s_padmux = {
475 .muxmask_counts = ARRAY_SIZE(i2s_muxmask),
476 .muxmask = i2s_muxmask,
477 .funcmask = BIT(3) | BIT(9),
478 .funcval = BIT(3),
479 };
480
481 static const unsigned i2s_pins[] = { 42, 43, 44, 45, 46, 51, 55, 60 };
482
483 static const struct sirfsoc_muxmask ac97_muxmask[] = {
484 {
485 .group = 1,
486 .mask = BIT(11) | BIT(12) | BIT(13) | BIT(14),
487 },
488 };
489
490 static const struct sirfsoc_padmux ac97_padmux = {
491 .muxmask_counts = ARRAY_SIZE(ac97_muxmask),
492 .muxmask = ac97_muxmask,
493 .funcmask = BIT(8),
494 .funcval = 0,
495 };
496
497 static const unsigned ac97_pins[] = { 33, 34, 35, 36 };
498
499 static const struct sirfsoc_muxmask spi1_muxmask[] = {
500 {
501 .group = 1,
502 .mask = BIT(11) | BIT(12) | BIT(13) | BIT(14),
503 },
504 };
505
506 static const struct sirfsoc_padmux spi1_padmux = {
507 .muxmask_counts = ARRAY_SIZE(spi1_muxmask),
508 .muxmask = spi1_muxmask,
509 .funcmask = BIT(8),
510 .funcval = BIT(8),
511 };
512
513 static const unsigned spi1_pins[] = { 43, 44, 45, 46 };
514
515 static const struct sirfsoc_muxmask sdmmc1_muxmask[] = {
516 {
517 .group = 0,
518 .mask = BIT(27) | BIT(28) | BIT(29),
519 },
520 };
521
522 static const struct sirfsoc_padmux sdmmc1_padmux = {
523 .muxmask_counts = ARRAY_SIZE(sdmmc1_muxmask),
524 .muxmask = sdmmc1_muxmask,
525 };
526
527 static const unsigned sdmmc1_pins[] = { 27, 28, 29 };
528
529 static const struct sirfsoc_muxmask gps_muxmask[] = {
530 {
531 .group = 0,
532 .mask = BIT(24) | BIT(25) | BIT(26),
533 },
534 };
535
536 static const struct sirfsoc_padmux gps_padmux = {
537 .muxmask_counts = ARRAY_SIZE(gps_muxmask),
538 .muxmask = gps_muxmask,
539 .funcmask = BIT(12) | BIT(13) | BIT(14),
540 .funcval = BIT(12),
541 };
542
543 static const unsigned gps_pins[] = { 24, 25, 26 };
544
545 static const struct sirfsoc_muxmask sdmmc5_muxmask[] = {
546 {
547 .group = 0,
548 .mask = BIT(24) | BIT(25) | BIT(26),
549 }, {
550 .group = 1,
551 .mask = BIT(29),
552 }, {
553 .group = 2,
554 .mask = BIT(0) | BIT(1),
555 },
556 };
557
558 static const struct sirfsoc_padmux sdmmc5_padmux = {
559 .muxmask_counts = ARRAY_SIZE(sdmmc5_muxmask),
560 .muxmask = sdmmc5_muxmask,
561 .funcmask = BIT(13) | BIT(14),
562 .funcval = BIT(13) | BIT(14),
563 };
564
565 static const unsigned sdmmc5_pins[] = { 24, 25, 26, 61, 64, 65 };
566
567 static const struct sirfsoc_muxmask usp0_muxmask[] = {
568 {
569 .group = 1,
570 .mask = BIT(19) | BIT(20) | BIT(21) | BIT(22) | BIT(23),
571 },
572 };
573
574 static const struct sirfsoc_padmux usp0_padmux = {
575 .muxmask_counts = ARRAY_SIZE(usp0_muxmask),
576 .muxmask = usp0_muxmask,
577 .funcmask = BIT(1) | BIT(2) | BIT(6) | BIT(9),
578 .funcval = 0,
579 };
580
581 static const unsigned usp0_pins[] = { 51, 52, 53, 54, 55 };
582
583 static const struct sirfsoc_muxmask usp1_muxmask[] = {
584 {
585 .group = 1,
586 .mask = BIT(24) | BIT(25) | BIT(26) | BIT(27) | BIT(28),
587 },
588 };
589
590 static const struct sirfsoc_padmux usp1_padmux = {
591 .muxmask_counts = ARRAY_SIZE(usp1_muxmask),
592 .muxmask = usp1_muxmask,
593 .funcmask = BIT(1) | BIT(9) | BIT(10) | BIT(11),
594 .funcval = 0,
595 };
596
597 static const unsigned usp1_pins[] = { 56, 57, 58, 59, 60 };
598
599 static const struct sirfsoc_muxmask usp2_muxmask[] = {
600 {
601 .group = 1,
602 .mask = BIT(29) | BIT(30) | BIT(31),
603 }, {
604 .group = 2,
605 .mask = BIT(0) | BIT(1),
606 },
607 };
608
609 static const struct sirfsoc_padmux usp2_padmux = {
610 .muxmask_counts = ARRAY_SIZE(usp2_muxmask),
611 .muxmask = usp2_muxmask,
612 .funcmask = BIT(13) | BIT(14),
613 .funcval = 0,
614 };
615
616 static const unsigned usp2_pins[] = { 61, 62, 63, 64, 65 };
617
618 static const struct sirfsoc_muxmask nand_muxmask[] = {
619 {
620 .group = 2,
621 .mask = BIT(2) | BIT(3) | BIT(28) | BIT(29) | BIT(30),
622 },
623 };
624
625 static const struct sirfsoc_padmux nand_padmux = {
626 .muxmask_counts = ARRAY_SIZE(nand_muxmask),
627 .muxmask = nand_muxmask,
628 .funcmask = BIT(5),
629 .funcval = 0,
630 };
631
632 static const unsigned nand_pins[] = { 64, 65, 92, 93, 94 };
633
634 static const struct sirfsoc_padmux sdmmc0_padmux = {
635 .muxmask_counts = 0,
636 .funcmask = BIT(5),
637 .funcval = 0,
638 };
639
640 static const unsigned sdmmc0_pins[] = { };
641
642 static const struct sirfsoc_muxmask sdmmc2_muxmask[] = {
643 {
644 .group = 2,
645 .mask = BIT(2) | BIT(3),
646 },
647 };
648
649 static const struct sirfsoc_padmux sdmmc2_padmux = {
650 .muxmask_counts = ARRAY_SIZE(sdmmc2_muxmask),
651 .muxmask = sdmmc2_muxmask,
652 .funcmask = BIT(5),
653 .funcval = BIT(5),
654 };
655
656 static const unsigned sdmmc2_pins[] = { 66, 67 };
657
658 static const struct sirfsoc_muxmask cko0_muxmask[] = {
659 {
660 .group = 2,
661 .mask = BIT(14),
662 },
663 };
664
665 static const struct sirfsoc_padmux cko0_padmux = {
666 .muxmask_counts = ARRAY_SIZE(cko0_muxmask),
667 .muxmask = cko0_muxmask,
668 };
669
670 static const unsigned cko0_pins[] = { 78 };
671
672 static const struct sirfsoc_muxmask vip_muxmask[] = {
673 {
674 .group = 2,
675 .mask = BIT(15) | BIT(16) | BIT(17) | BIT(18) | BIT(19)
676 | BIT(20) | BIT(21) | BIT(22) | BIT(23) | BIT(24) |
677 BIT(25),
678 },
679 };
680
681 static const struct sirfsoc_padmux vip_padmux = {
682 .muxmask_counts = ARRAY_SIZE(vip_muxmask),
683 .muxmask = vip_muxmask,
684 .funcmask = BIT(0),
685 .funcval = 0,
686 };
687
688 static const unsigned vip_pins[] = { 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89 };
689
690 static const struct sirfsoc_muxmask i2c0_muxmask[] = {
691 {
692 .group = 2,
693 .mask = BIT(26) | BIT(27),
694 },
695 };
696
697 static const struct sirfsoc_padmux i2c0_padmux = {
698 .muxmask_counts = ARRAY_SIZE(i2c0_muxmask),
699 .muxmask = i2c0_muxmask,
700 };
701
702 static const unsigned i2c0_pins[] = { 90, 91 };
703
704 static const struct sirfsoc_muxmask i2c1_muxmask[] = {
705 {
706 .group = 0,
707 .mask = BIT(13) | BIT(15),
708 },
709 };
710
711 static const struct sirfsoc_padmux i2c1_padmux = {
712 .muxmask_counts = ARRAY_SIZE(i2c1_muxmask),
713 .muxmask = i2c1_muxmask,
714 };
715
716 static const unsigned i2c1_pins[] = { 13, 15 };
717
718 static const struct sirfsoc_muxmask viprom_muxmask[] = {
719 {
720 .group = 2,
721 .mask = BIT(15) | BIT(16) | BIT(17) | BIT(18) | BIT(19)
722 | BIT(20) | BIT(21) | BIT(22) | BIT(23) | BIT(24) |
723 BIT(25),
724 }, {
725 .group = 0,
726 .mask = BIT(12),
727 },
728 };
729
730 static const struct sirfsoc_padmux viprom_padmux = {
731 .muxmask_counts = ARRAY_SIZE(viprom_muxmask),
732 .muxmask = viprom_muxmask,
733 .funcmask = BIT(0),
734 .funcval = BIT(0),
735 };
736
737 static const unsigned viprom_pins[] = { 12, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89 };
738
739 static const struct sirfsoc_muxmask pwm0_muxmask[] = {
740 {
741 .group = 0,
742 .mask = BIT(4),
743 },
744 };
745
746 static const struct sirfsoc_padmux pwm0_padmux = {
747 .muxmask_counts = ARRAY_SIZE(pwm0_muxmask),
748 .muxmask = pwm0_muxmask,
749 .funcmask = BIT(12),
750 .funcval = 0,
751 };
752
753 static const unsigned pwm0_pins[] = { 4 };
754
755 static const struct sirfsoc_muxmask pwm1_muxmask[] = {
756 {
757 .group = 0,
758 .mask = BIT(5),
759 },
760 };
761
762 static const struct sirfsoc_padmux pwm1_padmux = {
763 .muxmask_counts = ARRAY_SIZE(pwm1_muxmask),
764 .muxmask = pwm1_muxmask,
765 };
766
767 static const unsigned pwm1_pins[] = { 5 };
768
769 static const struct sirfsoc_muxmask pwm2_muxmask[] = {
770 {
771 .group = 0,
772 .mask = BIT(6),
773 },
774 };
775
776 static const struct sirfsoc_padmux pwm2_padmux = {
777 .muxmask_counts = ARRAY_SIZE(pwm2_muxmask),
778 .muxmask = pwm2_muxmask,
779 };
780
781 static const unsigned pwm2_pins[] = { 6 };
782
783 static const struct sirfsoc_muxmask pwm3_muxmask[] = {
784 {
785 .group = 0,
786 .mask = BIT(7),
787 },
788 };
789
790 static const struct sirfsoc_padmux pwm3_padmux = {
791 .muxmask_counts = ARRAY_SIZE(pwm3_muxmask),
792 .muxmask = pwm3_muxmask,
793 };
794
795 static const unsigned pwm3_pins[] = { 7 };
796
797 static const struct sirfsoc_muxmask warm_rst_muxmask[] = {
798 {
799 .group = 0,
800 .mask = BIT(8),
801 },
802 };
803
804 static const struct sirfsoc_padmux warm_rst_padmux = {
805 .muxmask_counts = ARRAY_SIZE(warm_rst_muxmask),
806 .muxmask = warm_rst_muxmask,
807 };
808
809 static const unsigned warm_rst_pins[] = { 8 };
810
811 static const struct sirfsoc_muxmask usb0_utmi_drvbus_muxmask[] = {
812 {
813 .group = 1,
814 .mask = BIT(22),
815 },
816 };
817 static const struct sirfsoc_padmux usb0_utmi_drvbus_padmux = {
818 .muxmask_counts = ARRAY_SIZE(usb0_utmi_drvbus_muxmask),
819 .muxmask = usb0_utmi_drvbus_muxmask,
820 .funcmask = BIT(6),
821 .funcval = BIT(6), /* refer to PAD_UTMI_DRVVBUS0_ENABLE */
822 };
823
824 static const unsigned usb0_utmi_drvbus_pins[] = { 54 };
825
826 static const struct sirfsoc_muxmask usb1_utmi_drvbus_muxmask[] = {
827 {
828 .group = 1,
829 .mask = BIT(27),
830 },
831 };
832
833 static const struct sirfsoc_padmux usb1_utmi_drvbus_padmux = {
834 .muxmask_counts = ARRAY_SIZE(usb1_utmi_drvbus_muxmask),
835 .muxmask = usb1_utmi_drvbus_muxmask,
836 .funcmask = BIT(11),
837 .funcval = BIT(11), /* refer to PAD_UTMI_DRVVBUS1_ENABLE */
838 };
839
840 static const unsigned usb1_utmi_drvbus_pins[] = { 59 };
841
842 static const struct sirfsoc_muxmask pulse_count_muxmask[] = {
843 {
844 .group = 0,
845 .mask = BIT(9) | BIT(10) | BIT(11),
846 },
847 };
848
849 static const struct sirfsoc_padmux pulse_count_padmux = {
850 .muxmask_counts = ARRAY_SIZE(pulse_count_muxmask),
851 .muxmask = pulse_count_muxmask,
852 };
853
854 static const unsigned pulse_count_pins[] = { 9, 10, 11 };
855
856 #define SIRFSOC_PIN_GROUP(n, p) \
857 { \
858 .name = n, \
859 .pins = p, \
860 .num_pins = ARRAY_SIZE(p), \
861 }
862
863 static const struct sirfsoc_pin_group sirfsoc_pin_groups[] = {
864 SIRFSOC_PIN_GROUP("lcd_16bitsgrp", lcd_16bits_pins),
865 SIRFSOC_PIN_GROUP("lcd_18bitsgrp", lcd_18bits_pins),
866 SIRFSOC_PIN_GROUP("lcd_24bitsgrp", lcd_24bits_pins),
867 SIRFSOC_PIN_GROUP("lcdrom_grp", lcdrom_pins),
868 SIRFSOC_PIN_GROUP("uart0grp", uart0_pins),
869 SIRFSOC_PIN_GROUP("uart1grp", uart1_pins),
870 SIRFSOC_PIN_GROUP("uart2grp", uart2_pins),
871 SIRFSOC_PIN_GROUP("uart2_nostreamctrlgrp", uart2_nostreamctrl_pins),
872 SIRFSOC_PIN_GROUP("usp0grp", usp0_pins),
873 SIRFSOC_PIN_GROUP("usp1grp", usp1_pins),
874 SIRFSOC_PIN_GROUP("usp2grp", usp2_pins),
875 SIRFSOC_PIN_GROUP("i2c0grp", i2c0_pins),
876 SIRFSOC_PIN_GROUP("i2c1grp", i2c1_pins),
877 SIRFSOC_PIN_GROUP("pwm0grp", pwm0_pins),
878 SIRFSOC_PIN_GROUP("pwm1grp", pwm1_pins),
879 SIRFSOC_PIN_GROUP("pwm2grp", pwm2_pins),
880 SIRFSOC_PIN_GROUP("pwm3grp", pwm3_pins),
881 SIRFSOC_PIN_GROUP("vipgrp", vip_pins),
882 SIRFSOC_PIN_GROUP("vipromgrp", viprom_pins),
883 SIRFSOC_PIN_GROUP("warm_rstgrp", warm_rst_pins),
884 SIRFSOC_PIN_GROUP("cko0_rstgrp", cko0_pins),
885 SIRFSOC_PIN_GROUP("cko1_rstgrp", cko1_pins),
886 SIRFSOC_PIN_GROUP("sdmmc0grp", sdmmc0_pins),
887 SIRFSOC_PIN_GROUP("sdmmc1grp", sdmmc1_pins),
888 SIRFSOC_PIN_GROUP("sdmmc2grp", sdmmc2_pins),
889 SIRFSOC_PIN_GROUP("sdmmc3grp", sdmmc3_pins),
890 SIRFSOC_PIN_GROUP("sdmmc4grp", sdmmc4_pins),
891 SIRFSOC_PIN_GROUP("sdmmc5grp", sdmmc5_pins),
892 SIRFSOC_PIN_GROUP("usb0_utmi_drvbusgrp", usb0_utmi_drvbus_pins),
893 SIRFSOC_PIN_GROUP("usb1_utmi_drvbusgrp", usb1_utmi_drvbus_pins),
894 SIRFSOC_PIN_GROUP("pulse_countgrp", pulse_count_pins),
895 SIRFSOC_PIN_GROUP("i2sgrp", i2s_pins),
896 SIRFSOC_PIN_GROUP("ac97grp", ac97_pins),
897 SIRFSOC_PIN_GROUP("nandgrp", nand_pins),
898 SIRFSOC_PIN_GROUP("spi0grp", spi0_pins),
899 SIRFSOC_PIN_GROUP("spi1grp", spi1_pins),
900 SIRFSOC_PIN_GROUP("gpsgrp", gps_pins),
901 };
902
sirfsoc_get_groups_count(struct pinctrl_dev * pctldev)903 static int sirfsoc_get_groups_count(struct pinctrl_dev *pctldev)
904 {
905 return ARRAY_SIZE(sirfsoc_pin_groups);
906 }
907
sirfsoc_get_group_name(struct pinctrl_dev * pctldev,unsigned selector)908 static const char *sirfsoc_get_group_name(struct pinctrl_dev *pctldev,
909 unsigned selector)
910 {
911 return sirfsoc_pin_groups[selector].name;
912 }
913
sirfsoc_get_group_pins(struct pinctrl_dev * pctldev,unsigned selector,const unsigned ** pins,unsigned * num_pins)914 static int sirfsoc_get_group_pins(struct pinctrl_dev *pctldev, unsigned selector,
915 const unsigned **pins,
916 unsigned *num_pins)
917 {
918 *pins = sirfsoc_pin_groups[selector].pins;
919 *num_pins = sirfsoc_pin_groups[selector].num_pins;
920 return 0;
921 }
922
sirfsoc_pin_dbg_show(struct pinctrl_dev * pctldev,struct seq_file * s,unsigned offset)923 static void sirfsoc_pin_dbg_show(struct pinctrl_dev *pctldev, struct seq_file *s,
924 unsigned offset)
925 {
926 seq_printf(s, " " DRIVER_NAME);
927 }
928
sirfsoc_dt_node_to_map(struct pinctrl_dev * pctldev,struct device_node * np_config,struct pinctrl_map ** map,unsigned * num_maps)929 static int sirfsoc_dt_node_to_map(struct pinctrl_dev *pctldev,
930 struct device_node *np_config,
931 struct pinctrl_map **map, unsigned *num_maps)
932 {
933 struct sirfsoc_pmx *spmx = pinctrl_dev_get_drvdata(pctldev);
934 struct device_node *np;
935 struct property *prop;
936 const char *function, *group;
937 int ret, index = 0, count = 0;
938
939 /* calculate number of maps required */
940 for_each_child_of_node(np_config, np) {
941 ret = of_property_read_string(np, "sirf,function", &function);
942 if (ret < 0)
943 return ret;
944
945 ret = of_property_count_strings(np, "sirf,pins");
946 if (ret < 0)
947 return ret;
948
949 count += ret;
950 }
951
952 if (!count) {
953 dev_err(spmx->dev, "No child nodes passed via DT\n");
954 return -ENODEV;
955 }
956
957 *map = kzalloc(sizeof(**map) * count, GFP_KERNEL);
958 if (!*map)
959 return -ENOMEM;
960
961 for_each_child_of_node(np_config, np) {
962 of_property_read_string(np, "sirf,function", &function);
963 of_property_for_each_string(np, "sirf,pins", prop, group) {
964 (*map)[index].type = PIN_MAP_TYPE_MUX_GROUP;
965 (*map)[index].data.mux.group = group;
966 (*map)[index].data.mux.function = function;
967 index++;
968 }
969 }
970
971 *num_maps = count;
972
973 return 0;
974 }
975
sirfsoc_dt_free_map(struct pinctrl_dev * pctldev,struct pinctrl_map * map,unsigned num_maps)976 static void sirfsoc_dt_free_map(struct pinctrl_dev *pctldev,
977 struct pinctrl_map *map, unsigned num_maps)
978 {
979 kfree(map);
980 }
981
982 static const struct pinctrl_ops sirfsoc_pctrl_ops = {
983 .get_groups_count = sirfsoc_get_groups_count,
984 .get_group_name = sirfsoc_get_group_name,
985 .get_group_pins = sirfsoc_get_group_pins,
986 .pin_dbg_show = sirfsoc_pin_dbg_show,
987 .dt_node_to_map = sirfsoc_dt_node_to_map,
988 .dt_free_map = sirfsoc_dt_free_map,
989 };
990
991 struct sirfsoc_pmx_func {
992 const char *name;
993 const char * const *groups;
994 const unsigned num_groups;
995 const struct sirfsoc_padmux *padmux;
996 };
997
998 static const char * const lcd_16bitsgrp[] = { "lcd_16bitsgrp" };
999 static const char * const lcd_18bitsgrp[] = { "lcd_18bitsgrp" };
1000 static const char * const lcd_24bitsgrp[] = { "lcd_24bitsgrp" };
1001 static const char * const lcdromgrp[] = { "lcdromgrp" };
1002 static const char * const uart0grp[] = { "uart0grp" };
1003 static const char * const uart1grp[] = { "uart1grp" };
1004 static const char * const uart2grp[] = { "uart2grp" };
1005 static const char * const uart2_nostreamctrlgrp[] = { "uart2_nostreamctrlgrp" };
1006 static const char * const usp0grp[] = { "usp0grp" };
1007 static const char * const usp1grp[] = { "usp1grp" };
1008 static const char * const usp2grp[] = { "usp2grp" };
1009 static const char * const i2c0grp[] = { "i2c0grp" };
1010 static const char * const i2c1grp[] = { "i2c1grp" };
1011 static const char * const pwm0grp[] = { "pwm0grp" };
1012 static const char * const pwm1grp[] = { "pwm1grp" };
1013 static const char * const pwm2grp[] = { "pwm2grp" };
1014 static const char * const pwm3grp[] = { "pwm3grp" };
1015 static const char * const vipgrp[] = { "vipgrp" };
1016 static const char * const vipromgrp[] = { "vipromgrp" };
1017 static const char * const warm_rstgrp[] = { "warm_rstgrp" };
1018 static const char * const cko0grp[] = { "cko0grp" };
1019 static const char * const cko1grp[] = { "cko1grp" };
1020 static const char * const sdmmc0grp[] = { "sdmmc0grp" };
1021 static const char * const sdmmc1grp[] = { "sdmmc1grp" };
1022 static const char * const sdmmc2grp[] = { "sdmmc2grp" };
1023 static const char * const sdmmc3grp[] = { "sdmmc3grp" };
1024 static const char * const sdmmc4grp[] = { "sdmmc4grp" };
1025 static const char * const sdmmc5grp[] = { "sdmmc5grp" };
1026 static const char * const usb0_utmi_drvbusgrp[] = { "usb0_utmi_drvbusgrp" };
1027 static const char * const usb1_utmi_drvbusgrp[] = { "usb1_utmi_drvbusgrp" };
1028 static const char * const pulse_countgrp[] = { "pulse_countgrp" };
1029 static const char * const i2sgrp[] = { "i2sgrp" };
1030 static const char * const ac97grp[] = { "ac97grp" };
1031 static const char * const nandgrp[] = { "nandgrp" };
1032 static const char * const spi0grp[] = { "spi0grp" };
1033 static const char * const spi1grp[] = { "spi1grp" };
1034 static const char * const gpsgrp[] = { "gpsgrp" };
1035
1036 #define SIRFSOC_PMX_FUNCTION(n, g, m) \
1037 { \
1038 .name = n, \
1039 .groups = g, \
1040 .num_groups = ARRAY_SIZE(g), \
1041 .padmux = &m, \
1042 }
1043
1044 static const struct sirfsoc_pmx_func sirfsoc_pmx_functions[] = {
1045 SIRFSOC_PMX_FUNCTION("lcd_16bits", lcd_16bitsgrp, lcd_16bits_padmux),
1046 SIRFSOC_PMX_FUNCTION("lcd_18bits", lcd_18bitsgrp, lcd_18bits_padmux),
1047 SIRFSOC_PMX_FUNCTION("lcd_24bits", lcd_24bitsgrp, lcd_24bits_padmux),
1048 SIRFSOC_PMX_FUNCTION("lcdrom", lcdromgrp, lcdrom_padmux),
1049 SIRFSOC_PMX_FUNCTION("uart0", uart0grp, uart0_padmux),
1050 SIRFSOC_PMX_FUNCTION("uart1", uart1grp, uart1_padmux),
1051 SIRFSOC_PMX_FUNCTION("uart2", uart2grp, uart2_padmux),
1052 SIRFSOC_PMX_FUNCTION("uart2_nostreamctrl", uart2_nostreamctrlgrp, uart2_nostreamctrl_padmux),
1053 SIRFSOC_PMX_FUNCTION("usp0", usp0grp, usp0_padmux),
1054 SIRFSOC_PMX_FUNCTION("usp1", usp1grp, usp1_padmux),
1055 SIRFSOC_PMX_FUNCTION("usp2", usp2grp, usp2_padmux),
1056 SIRFSOC_PMX_FUNCTION("i2c0", i2c0grp, i2c0_padmux),
1057 SIRFSOC_PMX_FUNCTION("i2c1", i2c1grp, i2c1_padmux),
1058 SIRFSOC_PMX_FUNCTION("pwm0", pwm0grp, pwm0_padmux),
1059 SIRFSOC_PMX_FUNCTION("pwm1", pwm1grp, pwm1_padmux),
1060 SIRFSOC_PMX_FUNCTION("pwm2", pwm2grp, pwm2_padmux),
1061 SIRFSOC_PMX_FUNCTION("pwm3", pwm3grp, pwm3_padmux),
1062 SIRFSOC_PMX_FUNCTION("vip", vipgrp, vip_padmux),
1063 SIRFSOC_PMX_FUNCTION("viprom", vipromgrp, viprom_padmux),
1064 SIRFSOC_PMX_FUNCTION("warm_rst", warm_rstgrp, warm_rst_padmux),
1065 SIRFSOC_PMX_FUNCTION("cko0", cko0grp, cko0_padmux),
1066 SIRFSOC_PMX_FUNCTION("cko1", cko1grp, cko1_padmux),
1067 SIRFSOC_PMX_FUNCTION("sdmmc0", sdmmc0grp, sdmmc0_padmux),
1068 SIRFSOC_PMX_FUNCTION("sdmmc1", sdmmc1grp, sdmmc1_padmux),
1069 SIRFSOC_PMX_FUNCTION("sdmmc2", sdmmc2grp, sdmmc2_padmux),
1070 SIRFSOC_PMX_FUNCTION("sdmmc3", sdmmc3grp, sdmmc3_padmux),
1071 SIRFSOC_PMX_FUNCTION("sdmmc4", sdmmc4grp, sdmmc4_padmux),
1072 SIRFSOC_PMX_FUNCTION("sdmmc5", sdmmc5grp, sdmmc5_padmux),
1073 SIRFSOC_PMX_FUNCTION("usb0_utmi_drvbus", usb0_utmi_drvbusgrp, usb0_utmi_drvbus_padmux),
1074 SIRFSOC_PMX_FUNCTION("usb1_utmi_drvbus", usb1_utmi_drvbusgrp, usb1_utmi_drvbus_padmux),
1075 SIRFSOC_PMX_FUNCTION("pulse_count", pulse_countgrp, pulse_count_padmux),
1076 SIRFSOC_PMX_FUNCTION("i2s", i2sgrp, i2s_padmux),
1077 SIRFSOC_PMX_FUNCTION("ac97", ac97grp, ac97_padmux),
1078 SIRFSOC_PMX_FUNCTION("nand", nandgrp, nand_padmux),
1079 SIRFSOC_PMX_FUNCTION("spi0", spi0grp, spi0_padmux),
1080 SIRFSOC_PMX_FUNCTION("spi1", spi1grp, spi1_padmux),
1081 SIRFSOC_PMX_FUNCTION("gps", gpsgrp, gps_padmux),
1082 };
1083
sirfsoc_pinmux_endisable(struct sirfsoc_pmx * spmx,unsigned selector,bool enable)1084 static void sirfsoc_pinmux_endisable(struct sirfsoc_pmx *spmx, unsigned selector,
1085 bool enable)
1086 {
1087 int i;
1088 const struct sirfsoc_padmux *mux = sirfsoc_pmx_functions[selector].padmux;
1089 const struct sirfsoc_muxmask *mask = mux->muxmask;
1090
1091 for (i = 0; i < mux->muxmask_counts; i++) {
1092 u32 muxval;
1093 if (!spmx->is_marco) {
1094 muxval = readl(spmx->gpio_virtbase + SIRFSOC_GPIO_PAD_EN(mask[i].group));
1095 if (enable)
1096 muxval = muxval & ~mask[i].mask;
1097 else
1098 muxval = muxval | mask[i].mask;
1099 writel(muxval, spmx->gpio_virtbase + SIRFSOC_GPIO_PAD_EN(mask[i].group));
1100 } else {
1101 if (enable)
1102 writel(mask[i].mask, spmx->gpio_virtbase +
1103 SIRFSOC_GPIO_PAD_EN_CLR(mask[i].group));
1104 else
1105 writel(mask[i].mask, spmx->gpio_virtbase +
1106 SIRFSOC_GPIO_PAD_EN(mask[i].group));
1107 }
1108 }
1109
1110 if (mux->funcmask && enable) {
1111 u32 func_en_val;
1112 func_en_val =
1113 readl(spmx->rsc_virtbase + SIRFSOC_RSC_PIN_MUX);
1114 func_en_val =
1115 (func_en_val & ~mux->funcmask) | (mux->
1116 funcval);
1117 writel(func_en_val, spmx->rsc_virtbase + SIRFSOC_RSC_PIN_MUX);
1118 }
1119 }
1120
sirfsoc_pinmux_enable(struct pinctrl_dev * pmxdev,unsigned selector,unsigned group)1121 static int sirfsoc_pinmux_enable(struct pinctrl_dev *pmxdev, unsigned selector,
1122 unsigned group)
1123 {
1124 struct sirfsoc_pmx *spmx;
1125
1126 spmx = pinctrl_dev_get_drvdata(pmxdev);
1127 sirfsoc_pinmux_endisable(spmx, selector, true);
1128
1129 return 0;
1130 }
1131
sirfsoc_pinmux_disable(struct pinctrl_dev * pmxdev,unsigned selector,unsigned group)1132 static void sirfsoc_pinmux_disable(struct pinctrl_dev *pmxdev, unsigned selector,
1133 unsigned group)
1134 {
1135 struct sirfsoc_pmx *spmx;
1136
1137 spmx = pinctrl_dev_get_drvdata(pmxdev);
1138 sirfsoc_pinmux_endisable(spmx, selector, false);
1139 }
1140
sirfsoc_pinmux_get_funcs_count(struct pinctrl_dev * pmxdev)1141 static int sirfsoc_pinmux_get_funcs_count(struct pinctrl_dev *pmxdev)
1142 {
1143 return ARRAY_SIZE(sirfsoc_pmx_functions);
1144 }
1145
sirfsoc_pinmux_get_func_name(struct pinctrl_dev * pctldev,unsigned selector)1146 static const char *sirfsoc_pinmux_get_func_name(struct pinctrl_dev *pctldev,
1147 unsigned selector)
1148 {
1149 return sirfsoc_pmx_functions[selector].name;
1150 }
1151
sirfsoc_pinmux_get_groups(struct pinctrl_dev * pctldev,unsigned selector,const char * const ** groups,unsigned * const num_groups)1152 static int sirfsoc_pinmux_get_groups(struct pinctrl_dev *pctldev, unsigned selector,
1153 const char * const **groups,
1154 unsigned * const num_groups)
1155 {
1156 *groups = sirfsoc_pmx_functions[selector].groups;
1157 *num_groups = sirfsoc_pmx_functions[selector].num_groups;
1158 return 0;
1159 }
1160
sirfsoc_pinmux_request_gpio(struct pinctrl_dev * pmxdev,struct pinctrl_gpio_range * range,unsigned offset)1161 static int sirfsoc_pinmux_request_gpio(struct pinctrl_dev *pmxdev,
1162 struct pinctrl_gpio_range *range, unsigned offset)
1163 {
1164 struct sirfsoc_pmx *spmx;
1165
1166 int group = range->id;
1167
1168 u32 muxval;
1169
1170 spmx = pinctrl_dev_get_drvdata(pmxdev);
1171
1172 if (!spmx->is_marco) {
1173 muxval = readl(spmx->gpio_virtbase + SIRFSOC_GPIO_PAD_EN(group));
1174 muxval = muxval | (1 << (offset - range->pin_base));
1175 writel(muxval, spmx->gpio_virtbase + SIRFSOC_GPIO_PAD_EN(group));
1176 } else {
1177 writel(1 << (offset - range->pin_base), spmx->gpio_virtbase +
1178 SIRFSOC_GPIO_PAD_EN(group));
1179 }
1180
1181 return 0;
1182 }
1183
1184 static const struct pinmux_ops sirfsoc_pinmux_ops = {
1185 .enable = sirfsoc_pinmux_enable,
1186 .disable = sirfsoc_pinmux_disable,
1187 .get_functions_count = sirfsoc_pinmux_get_funcs_count,
1188 .get_function_name = sirfsoc_pinmux_get_func_name,
1189 .get_function_groups = sirfsoc_pinmux_get_groups,
1190 .gpio_request_enable = sirfsoc_pinmux_request_gpio,
1191 };
1192
1193 static struct pinctrl_desc sirfsoc_pinmux_desc = {
1194 .name = DRIVER_NAME,
1195 .pins = sirfsoc_pads,
1196 .npins = ARRAY_SIZE(sirfsoc_pads),
1197 .pctlops = &sirfsoc_pctrl_ops,
1198 .pmxops = &sirfsoc_pinmux_ops,
1199 .owner = THIS_MODULE,
1200 };
1201
1202 /*
1203 * Todo: bind irq_chip to every pinctrl_gpio_range
1204 */
1205 static struct pinctrl_gpio_range sirfsoc_gpio_ranges[] = {
1206 {
1207 .name = "sirfsoc-gpio*",
1208 .id = 0,
1209 .base = 0,
1210 .pin_base = 0,
1211 .npins = 32,
1212 }, {
1213 .name = "sirfsoc-gpio*",
1214 .id = 1,
1215 .base = 32,
1216 .pin_base = 32,
1217 .npins = 32,
1218 }, {
1219 .name = "sirfsoc-gpio*",
1220 .id = 2,
1221 .base = 64,
1222 .pin_base = 64,
1223 .npins = 32,
1224 }, {
1225 .name = "sirfsoc-gpio*",
1226 .id = 3,
1227 .base = 96,
1228 .pin_base = 96,
1229 .npins = 19,
1230 },
1231 };
1232
sirfsoc_rsc_of_iomap(void)1233 static void __iomem *sirfsoc_rsc_of_iomap(void)
1234 {
1235 const struct of_device_id rsc_ids[] = {
1236 { .compatible = "sirf,prima2-rsc" },
1237 { .compatible = "sirf,marco-rsc" },
1238 {}
1239 };
1240 struct device_node *np;
1241
1242 np = of_find_matching_node(NULL, rsc_ids);
1243 if (!np)
1244 panic("unable to find compatible rsc node in dtb\n");
1245
1246 return of_iomap(np, 0);
1247 }
1248
sirfsoc_gpio_of_xlate(struct gpio_chip * gc,const struct of_phandle_args * gpiospec,u32 * flags)1249 static int sirfsoc_gpio_of_xlate(struct gpio_chip *gc,
1250 const struct of_phandle_args *gpiospec,
1251 u32 *flags)
1252 {
1253 if (gpiospec->args[0] > SIRFSOC_GPIO_NO_OF_BANKS * SIRFSOC_GPIO_BANK_SIZE)
1254 return -EINVAL;
1255
1256 if (gc != &sgpio_bank[gpiospec->args[0] / SIRFSOC_GPIO_BANK_SIZE].chip.gc)
1257 return -EINVAL;
1258
1259 if (flags)
1260 *flags = gpiospec->args[1];
1261
1262 return gpiospec->args[0] % SIRFSOC_GPIO_BANK_SIZE;
1263 }
1264
sirfsoc_pinmux_probe(struct platform_device * pdev)1265 static int sirfsoc_pinmux_probe(struct platform_device *pdev)
1266 {
1267 int ret;
1268 struct sirfsoc_pmx *spmx;
1269 struct device_node *np = pdev->dev.of_node;
1270 int i;
1271
1272 /* Create state holders etc for this driver */
1273 spmx = devm_kzalloc(&pdev->dev, sizeof(*spmx), GFP_KERNEL);
1274 if (!spmx)
1275 return -ENOMEM;
1276
1277 spmx->dev = &pdev->dev;
1278
1279 platform_set_drvdata(pdev, spmx);
1280
1281 spmx->gpio_virtbase = of_iomap(np, 0);
1282 if (!spmx->gpio_virtbase) {
1283 ret = -ENOMEM;
1284 dev_err(&pdev->dev, "can't map gpio registers\n");
1285 goto out_no_gpio_remap;
1286 }
1287
1288 spmx->rsc_virtbase = sirfsoc_rsc_of_iomap();
1289 if (!spmx->rsc_virtbase) {
1290 ret = -ENOMEM;
1291 dev_err(&pdev->dev, "can't map rsc registers\n");
1292 goto out_no_rsc_remap;
1293 }
1294
1295 if (of_device_is_compatible(np, "sirf,marco-pinctrl"))
1296 spmx->is_marco = 1;
1297
1298 /* Now register the pin controller and all pins it handles */
1299 spmx->pmx = pinctrl_register(&sirfsoc_pinmux_desc, &pdev->dev, spmx);
1300 if (!spmx->pmx) {
1301 dev_err(&pdev->dev, "could not register SIRFSOC pinmux driver\n");
1302 ret = -EINVAL;
1303 goto out_no_pmx;
1304 }
1305
1306 for (i = 0; i < ARRAY_SIZE(sirfsoc_gpio_ranges); i++) {
1307 sirfsoc_gpio_ranges[i].gc = &sgpio_bank[i].chip.gc;
1308 pinctrl_add_gpio_range(spmx->pmx, &sirfsoc_gpio_ranges[i]);
1309 }
1310
1311 dev_info(&pdev->dev, "initialized SIRFSOC pinmux driver\n");
1312
1313 return 0;
1314
1315 out_no_pmx:
1316 iounmap(spmx->rsc_virtbase);
1317 out_no_rsc_remap:
1318 iounmap(spmx->gpio_virtbase);
1319 out_no_gpio_remap:
1320 platform_set_drvdata(pdev, NULL);
1321 return ret;
1322 }
1323
1324 static const struct of_device_id pinmux_ids[] = {
1325 { .compatible = "sirf,prima2-pinctrl" },
1326 { .compatible = "sirf,marco-pinctrl" },
1327 {}
1328 };
1329
1330 static struct platform_driver sirfsoc_pinmux_driver = {
1331 .driver = {
1332 .name = DRIVER_NAME,
1333 .owner = THIS_MODULE,
1334 .of_match_table = pinmux_ids,
1335 },
1336 .probe = sirfsoc_pinmux_probe,
1337 };
1338
sirfsoc_pinmux_init(void)1339 static int __init sirfsoc_pinmux_init(void)
1340 {
1341 return platform_driver_register(&sirfsoc_pinmux_driver);
1342 }
1343 arch_initcall(sirfsoc_pinmux_init);
1344
sirfsoc_gpio_to_irq(struct gpio_chip * chip,unsigned offset)1345 static inline int sirfsoc_gpio_to_irq(struct gpio_chip *chip, unsigned offset)
1346 {
1347 struct sirfsoc_gpio_bank *bank = container_of(to_of_mm_gpio_chip(chip),
1348 struct sirfsoc_gpio_bank, chip);
1349
1350 return irq_create_mapping(bank->domain, offset);
1351 }
1352
sirfsoc_gpio_to_offset(unsigned int gpio)1353 static inline int sirfsoc_gpio_to_offset(unsigned int gpio)
1354 {
1355 return gpio % SIRFSOC_GPIO_BANK_SIZE;
1356 }
1357
sirfsoc_gpio_to_bank(unsigned int gpio)1358 static inline struct sirfsoc_gpio_bank *sirfsoc_gpio_to_bank(unsigned int gpio)
1359 {
1360 return &sgpio_bank[gpio / SIRFSOC_GPIO_BANK_SIZE];
1361 }
1362
sirfsoc_irqchip_to_bank(struct gpio_chip * chip)1363 static inline struct sirfsoc_gpio_bank *sirfsoc_irqchip_to_bank(struct gpio_chip *chip)
1364 {
1365 return container_of(to_of_mm_gpio_chip(chip), struct sirfsoc_gpio_bank, chip);
1366 }
1367
sirfsoc_gpio_irq_ack(struct irq_data * d)1368 static void sirfsoc_gpio_irq_ack(struct irq_data *d)
1369 {
1370 struct sirfsoc_gpio_bank *bank = irq_data_get_irq_chip_data(d);
1371 int idx = d->hwirq % SIRFSOC_GPIO_BANK_SIZE;
1372 u32 val, offset;
1373 unsigned long flags;
1374
1375 offset = SIRFSOC_GPIO_CTRL(bank->id, idx);
1376
1377 spin_lock_irqsave(&sgpio_lock, flags);
1378
1379 val = readl(bank->chip.regs + offset);
1380
1381 writel(val, bank->chip.regs + offset);
1382
1383 spin_unlock_irqrestore(&sgpio_lock, flags);
1384 }
1385
__sirfsoc_gpio_irq_mask(struct sirfsoc_gpio_bank * bank,int idx)1386 static void __sirfsoc_gpio_irq_mask(struct sirfsoc_gpio_bank *bank, int idx)
1387 {
1388 u32 val, offset;
1389 unsigned long flags;
1390
1391 offset = SIRFSOC_GPIO_CTRL(bank->id, idx);
1392
1393 spin_lock_irqsave(&sgpio_lock, flags);
1394
1395 val = readl(bank->chip.regs + offset);
1396 val &= ~SIRFSOC_GPIO_CTL_INTR_EN_MASK;
1397 val &= ~SIRFSOC_GPIO_CTL_INTR_STS_MASK;
1398 writel(val, bank->chip.regs + offset);
1399
1400 spin_unlock_irqrestore(&sgpio_lock, flags);
1401 }
1402
sirfsoc_gpio_irq_mask(struct irq_data * d)1403 static void sirfsoc_gpio_irq_mask(struct irq_data *d)
1404 {
1405 struct sirfsoc_gpio_bank *bank = irq_data_get_irq_chip_data(d);
1406
1407 __sirfsoc_gpio_irq_mask(bank, d->hwirq % SIRFSOC_GPIO_BANK_SIZE);
1408 }
1409
sirfsoc_gpio_irq_unmask(struct irq_data * d)1410 static void sirfsoc_gpio_irq_unmask(struct irq_data *d)
1411 {
1412 struct sirfsoc_gpio_bank *bank = irq_data_get_irq_chip_data(d);
1413 int idx = d->hwirq % SIRFSOC_GPIO_BANK_SIZE;
1414 u32 val, offset;
1415 unsigned long flags;
1416
1417 offset = SIRFSOC_GPIO_CTRL(bank->id, idx);
1418
1419 spin_lock_irqsave(&sgpio_lock, flags);
1420
1421 val = readl(bank->chip.regs + offset);
1422 val &= ~SIRFSOC_GPIO_CTL_INTR_STS_MASK;
1423 val |= SIRFSOC_GPIO_CTL_INTR_EN_MASK;
1424 writel(val, bank->chip.regs + offset);
1425
1426 spin_unlock_irqrestore(&sgpio_lock, flags);
1427 }
1428
sirfsoc_gpio_irq_type(struct irq_data * d,unsigned type)1429 static int sirfsoc_gpio_irq_type(struct irq_data *d, unsigned type)
1430 {
1431 struct sirfsoc_gpio_bank *bank = irq_data_get_irq_chip_data(d);
1432 int idx = d->hwirq % SIRFSOC_GPIO_BANK_SIZE;
1433 u32 val, offset;
1434 unsigned long flags;
1435
1436 offset = SIRFSOC_GPIO_CTRL(bank->id, idx);
1437
1438 spin_lock_irqsave(&sgpio_lock, flags);
1439
1440 val = readl(bank->chip.regs + offset);
1441 val &= ~SIRFSOC_GPIO_CTL_INTR_STS_MASK;
1442
1443 switch (type) {
1444 case IRQ_TYPE_NONE:
1445 break;
1446 case IRQ_TYPE_EDGE_RISING:
1447 val |= SIRFSOC_GPIO_CTL_INTR_HIGH_MASK | SIRFSOC_GPIO_CTL_INTR_TYPE_MASK;
1448 val &= ~SIRFSOC_GPIO_CTL_INTR_LOW_MASK;
1449 break;
1450 case IRQ_TYPE_EDGE_FALLING:
1451 val &= ~SIRFSOC_GPIO_CTL_INTR_HIGH_MASK;
1452 val |= SIRFSOC_GPIO_CTL_INTR_LOW_MASK | SIRFSOC_GPIO_CTL_INTR_TYPE_MASK;
1453 break;
1454 case IRQ_TYPE_EDGE_BOTH:
1455 val |= SIRFSOC_GPIO_CTL_INTR_HIGH_MASK | SIRFSOC_GPIO_CTL_INTR_LOW_MASK |
1456 SIRFSOC_GPIO_CTL_INTR_TYPE_MASK;
1457 break;
1458 case IRQ_TYPE_LEVEL_LOW:
1459 val &= ~(SIRFSOC_GPIO_CTL_INTR_HIGH_MASK | SIRFSOC_GPIO_CTL_INTR_TYPE_MASK);
1460 val |= SIRFSOC_GPIO_CTL_INTR_LOW_MASK;
1461 break;
1462 case IRQ_TYPE_LEVEL_HIGH:
1463 val |= SIRFSOC_GPIO_CTL_INTR_HIGH_MASK;
1464 val &= ~(SIRFSOC_GPIO_CTL_INTR_LOW_MASK | SIRFSOC_GPIO_CTL_INTR_TYPE_MASK);
1465 break;
1466 }
1467
1468 writel(val, bank->chip.regs + offset);
1469
1470 spin_unlock_irqrestore(&sgpio_lock, flags);
1471
1472 return 0;
1473 }
1474
1475 static struct irq_chip sirfsoc_irq_chip = {
1476 .name = "sirf-gpio-irq",
1477 .irq_ack = sirfsoc_gpio_irq_ack,
1478 .irq_mask = sirfsoc_gpio_irq_mask,
1479 .irq_unmask = sirfsoc_gpio_irq_unmask,
1480 .irq_set_type = sirfsoc_gpio_irq_type,
1481 };
1482
sirfsoc_gpio_handle_irq(unsigned int irq,struct irq_desc * desc)1483 static void sirfsoc_gpio_handle_irq(unsigned int irq, struct irq_desc *desc)
1484 {
1485 struct sirfsoc_gpio_bank *bank = irq_get_handler_data(irq);
1486 u32 status, ctrl;
1487 int idx = 0;
1488 struct irq_chip *chip = irq_get_chip(irq);
1489
1490 chained_irq_enter(chip, desc);
1491
1492 status = readl(bank->chip.regs + SIRFSOC_GPIO_INT_STATUS(bank->id));
1493 if (!status) {
1494 printk(KERN_WARNING
1495 "%s: gpio id %d status %#x no interrupt is flaged\n",
1496 __func__, bank->id, status);
1497 handle_bad_irq(irq, desc);
1498 return;
1499 }
1500
1501 while (status) {
1502 ctrl = readl(bank->chip.regs + SIRFSOC_GPIO_CTRL(bank->id, idx));
1503
1504 /*
1505 * Here we must check whether the corresponding GPIO's interrupt
1506 * has been enabled, otherwise just skip it
1507 */
1508 if ((status & 0x1) && (ctrl & SIRFSOC_GPIO_CTL_INTR_EN_MASK)) {
1509 pr_debug("%s: gpio id %d idx %d happens\n",
1510 __func__, bank->id, idx);
1511 generic_handle_irq(irq_find_mapping(bank->domain, idx));
1512 }
1513
1514 idx++;
1515 status = status >> 1;
1516 }
1517
1518 chained_irq_exit(chip, desc);
1519 }
1520
sirfsoc_gpio_set_input(struct sirfsoc_gpio_bank * bank,unsigned ctrl_offset)1521 static inline void sirfsoc_gpio_set_input(struct sirfsoc_gpio_bank *bank, unsigned ctrl_offset)
1522 {
1523 u32 val;
1524
1525 val = readl(bank->chip.regs + ctrl_offset);
1526 val &= ~SIRFSOC_GPIO_CTL_OUT_EN_MASK;
1527 writel(val, bank->chip.regs + ctrl_offset);
1528 }
1529
sirfsoc_gpio_request(struct gpio_chip * chip,unsigned offset)1530 static int sirfsoc_gpio_request(struct gpio_chip *chip, unsigned offset)
1531 {
1532 struct sirfsoc_gpio_bank *bank = sirfsoc_irqchip_to_bank(chip);
1533 unsigned long flags;
1534
1535 if (pinctrl_request_gpio(chip->base + offset))
1536 return -ENODEV;
1537
1538 spin_lock_irqsave(&bank->lock, flags);
1539
1540 /*
1541 * default status:
1542 * set direction as input and mask irq
1543 */
1544 sirfsoc_gpio_set_input(bank, SIRFSOC_GPIO_CTRL(bank->id, offset));
1545 __sirfsoc_gpio_irq_mask(bank, offset);
1546
1547 spin_unlock_irqrestore(&bank->lock, flags);
1548
1549 return 0;
1550 }
1551
sirfsoc_gpio_free(struct gpio_chip * chip,unsigned offset)1552 static void sirfsoc_gpio_free(struct gpio_chip *chip, unsigned offset)
1553 {
1554 struct sirfsoc_gpio_bank *bank = sirfsoc_irqchip_to_bank(chip);
1555 unsigned long flags;
1556
1557 spin_lock_irqsave(&bank->lock, flags);
1558
1559 __sirfsoc_gpio_irq_mask(bank, offset);
1560 sirfsoc_gpio_set_input(bank, SIRFSOC_GPIO_CTRL(bank->id, offset));
1561
1562 spin_unlock_irqrestore(&bank->lock, flags);
1563
1564 pinctrl_free_gpio(chip->base + offset);
1565 }
1566
sirfsoc_gpio_direction_input(struct gpio_chip * chip,unsigned gpio)1567 static int sirfsoc_gpio_direction_input(struct gpio_chip *chip, unsigned gpio)
1568 {
1569 struct sirfsoc_gpio_bank *bank = sirfsoc_irqchip_to_bank(chip);
1570 int idx = sirfsoc_gpio_to_offset(gpio);
1571 unsigned long flags;
1572 unsigned offset;
1573
1574 offset = SIRFSOC_GPIO_CTRL(bank->id, idx);
1575
1576 spin_lock_irqsave(&bank->lock, flags);
1577
1578 sirfsoc_gpio_set_input(bank, offset);
1579
1580 spin_unlock_irqrestore(&bank->lock, flags);
1581
1582 return 0;
1583 }
1584
sirfsoc_gpio_set_output(struct sirfsoc_gpio_bank * bank,unsigned offset,int value)1585 static inline void sirfsoc_gpio_set_output(struct sirfsoc_gpio_bank *bank, unsigned offset,
1586 int value)
1587 {
1588 u32 out_ctrl;
1589 unsigned long flags;
1590
1591 spin_lock_irqsave(&bank->lock, flags);
1592
1593 out_ctrl = readl(bank->chip.regs + offset);
1594 if (value)
1595 out_ctrl |= SIRFSOC_GPIO_CTL_DATAOUT_MASK;
1596 else
1597 out_ctrl &= ~SIRFSOC_GPIO_CTL_DATAOUT_MASK;
1598
1599 out_ctrl &= ~SIRFSOC_GPIO_CTL_INTR_EN_MASK;
1600 out_ctrl |= SIRFSOC_GPIO_CTL_OUT_EN_MASK;
1601 writel(out_ctrl, bank->chip.regs + offset);
1602
1603 spin_unlock_irqrestore(&bank->lock, flags);
1604 }
1605
sirfsoc_gpio_direction_output(struct gpio_chip * chip,unsigned gpio,int value)1606 static int sirfsoc_gpio_direction_output(struct gpio_chip *chip, unsigned gpio, int value)
1607 {
1608 struct sirfsoc_gpio_bank *bank = sirfsoc_irqchip_to_bank(chip);
1609 int idx = sirfsoc_gpio_to_offset(gpio);
1610 u32 offset;
1611 unsigned long flags;
1612
1613 offset = SIRFSOC_GPIO_CTRL(bank->id, idx);
1614
1615 spin_lock_irqsave(&sgpio_lock, flags);
1616
1617 sirfsoc_gpio_set_output(bank, offset, value);
1618
1619 spin_unlock_irqrestore(&sgpio_lock, flags);
1620
1621 return 0;
1622 }
1623
sirfsoc_gpio_get_value(struct gpio_chip * chip,unsigned offset)1624 static int sirfsoc_gpio_get_value(struct gpio_chip *chip, unsigned offset)
1625 {
1626 struct sirfsoc_gpio_bank *bank = sirfsoc_irqchip_to_bank(chip);
1627 u32 val;
1628 unsigned long flags;
1629
1630 spin_lock_irqsave(&bank->lock, flags);
1631
1632 val = readl(bank->chip.regs + SIRFSOC_GPIO_CTRL(bank->id, offset));
1633
1634 spin_unlock_irqrestore(&bank->lock, flags);
1635
1636 return !!(val & SIRFSOC_GPIO_CTL_DATAIN_MASK);
1637 }
1638
sirfsoc_gpio_set_value(struct gpio_chip * chip,unsigned offset,int value)1639 static void sirfsoc_gpio_set_value(struct gpio_chip *chip, unsigned offset,
1640 int value)
1641 {
1642 struct sirfsoc_gpio_bank *bank = sirfsoc_irqchip_to_bank(chip);
1643 u32 ctrl;
1644 unsigned long flags;
1645
1646 spin_lock_irqsave(&bank->lock, flags);
1647
1648 ctrl = readl(bank->chip.regs + SIRFSOC_GPIO_CTRL(bank->id, offset));
1649 if (value)
1650 ctrl |= SIRFSOC_GPIO_CTL_DATAOUT_MASK;
1651 else
1652 ctrl &= ~SIRFSOC_GPIO_CTL_DATAOUT_MASK;
1653 writel(ctrl, bank->chip.regs + SIRFSOC_GPIO_CTRL(bank->id, offset));
1654
1655 spin_unlock_irqrestore(&bank->lock, flags);
1656 }
1657
sirfsoc_gpio_irq_map(struct irq_domain * d,unsigned int irq,irq_hw_number_t hwirq)1658 static int sirfsoc_gpio_irq_map(struct irq_domain *d, unsigned int irq,
1659 irq_hw_number_t hwirq)
1660 {
1661 struct sirfsoc_gpio_bank *bank = d->host_data;
1662
1663 if (!bank)
1664 return -EINVAL;
1665
1666 irq_set_chip(irq, &sirfsoc_irq_chip);
1667 irq_set_handler(irq, handle_level_irq);
1668 irq_set_chip_data(irq, bank);
1669 set_irq_flags(irq, IRQF_VALID);
1670
1671 return 0;
1672 }
1673
1674 const struct irq_domain_ops sirfsoc_gpio_irq_simple_ops = {
1675 .map = sirfsoc_gpio_irq_map,
1676 .xlate = irq_domain_xlate_twocell,
1677 };
1678
sirfsoc_gpio_set_pullup(const u32 * pullups)1679 static void sirfsoc_gpio_set_pullup(const u32 *pullups)
1680 {
1681 int i, n;
1682 const unsigned long *p = (const unsigned long *)pullups;
1683
1684 for (i = 0; i < SIRFSOC_GPIO_NO_OF_BANKS; i++) {
1685 for_each_set_bit(n, p + i, BITS_PER_LONG) {
1686 u32 offset = SIRFSOC_GPIO_CTRL(i, n);
1687 u32 val = readl(sgpio_bank[i].chip.regs + offset);
1688 val |= SIRFSOC_GPIO_CTL_PULL_MASK;
1689 val |= SIRFSOC_GPIO_CTL_PULL_HIGH;
1690 writel(val, sgpio_bank[i].chip.regs + offset);
1691 }
1692 }
1693 }
1694
sirfsoc_gpio_set_pulldown(const u32 * pulldowns)1695 static void sirfsoc_gpio_set_pulldown(const u32 *pulldowns)
1696 {
1697 int i, n;
1698 const unsigned long *p = (const unsigned long *)pulldowns;
1699
1700 for (i = 0; i < SIRFSOC_GPIO_NO_OF_BANKS; i++) {
1701 for_each_set_bit(n, p + i, BITS_PER_LONG) {
1702 u32 offset = SIRFSOC_GPIO_CTRL(i, n);
1703 u32 val = readl(sgpio_bank[i].chip.regs + offset);
1704 val |= SIRFSOC_GPIO_CTL_PULL_MASK;
1705 val &= ~SIRFSOC_GPIO_CTL_PULL_HIGH;
1706 writel(val, sgpio_bank[i].chip.regs + offset);
1707 }
1708 }
1709 }
1710
sirfsoc_gpio_probe(struct device_node * np)1711 static int sirfsoc_gpio_probe(struct device_node *np)
1712 {
1713 int i, err = 0;
1714 struct sirfsoc_gpio_bank *bank;
1715 void *regs;
1716 struct platform_device *pdev;
1717 bool is_marco = false;
1718
1719 u32 pullups[SIRFSOC_GPIO_NO_OF_BANKS], pulldowns[SIRFSOC_GPIO_NO_OF_BANKS];
1720
1721 pdev = of_find_device_by_node(np);
1722 if (!pdev)
1723 return -ENODEV;
1724
1725 regs = of_iomap(np, 0);
1726 if (!regs)
1727 return -ENOMEM;
1728
1729 if (of_device_is_compatible(np, "sirf,marco-pinctrl"))
1730 is_marco = 1;
1731
1732 for (i = 0; i < SIRFSOC_GPIO_NO_OF_BANKS; i++) {
1733 bank = &sgpio_bank[i];
1734 spin_lock_init(&bank->lock);
1735 bank->chip.gc.request = sirfsoc_gpio_request;
1736 bank->chip.gc.free = sirfsoc_gpio_free;
1737 bank->chip.gc.direction_input = sirfsoc_gpio_direction_input;
1738 bank->chip.gc.get = sirfsoc_gpio_get_value;
1739 bank->chip.gc.direction_output = sirfsoc_gpio_direction_output;
1740 bank->chip.gc.set = sirfsoc_gpio_set_value;
1741 bank->chip.gc.to_irq = sirfsoc_gpio_to_irq;
1742 bank->chip.gc.base = i * SIRFSOC_GPIO_BANK_SIZE;
1743 bank->chip.gc.ngpio = SIRFSOC_GPIO_BANK_SIZE;
1744 bank->chip.gc.label = kstrdup(np->full_name, GFP_KERNEL);
1745 bank->chip.gc.of_node = np;
1746 bank->chip.gc.of_xlate = sirfsoc_gpio_of_xlate;
1747 bank->chip.gc.of_gpio_n_cells = 2;
1748 bank->chip.regs = regs;
1749 bank->id = i;
1750 bank->is_marco = is_marco;
1751 bank->parent_irq = platform_get_irq(pdev, i);
1752 if (bank->parent_irq < 0) {
1753 err = bank->parent_irq;
1754 goto out;
1755 }
1756
1757 err = gpiochip_add(&bank->chip.gc);
1758 if (err) {
1759 pr_err("%s: error in probe function with status %d\n",
1760 np->full_name, err);
1761 goto out;
1762 }
1763
1764 bank->domain = irq_domain_add_linear(np, SIRFSOC_GPIO_BANK_SIZE,
1765 &sirfsoc_gpio_irq_simple_ops, bank);
1766
1767 if (!bank->domain) {
1768 pr_err("%s: Failed to create irqdomain\n", np->full_name);
1769 err = -ENOSYS;
1770 goto out;
1771 }
1772
1773 irq_set_chained_handler(bank->parent_irq, sirfsoc_gpio_handle_irq);
1774 irq_set_handler_data(bank->parent_irq, bank);
1775 }
1776
1777 if (!of_property_read_u32_array(np, "sirf,pullups", pullups,
1778 SIRFSOC_GPIO_NO_OF_BANKS))
1779 sirfsoc_gpio_set_pullup(pullups);
1780
1781 if (!of_property_read_u32_array(np, "sirf,pulldowns", pulldowns,
1782 SIRFSOC_GPIO_NO_OF_BANKS))
1783 sirfsoc_gpio_set_pulldown(pulldowns);
1784
1785 return 0;
1786
1787 out:
1788 iounmap(regs);
1789 return err;
1790 }
1791
sirfsoc_gpio_init(void)1792 static int __init sirfsoc_gpio_init(void)
1793 {
1794
1795 struct device_node *np;
1796
1797 np = of_find_matching_node(NULL, pinmux_ids);
1798
1799 if (!np)
1800 return -ENODEV;
1801
1802 return sirfsoc_gpio_probe(np);
1803 }
1804 subsys_initcall(sirfsoc_gpio_init);
1805
1806 MODULE_AUTHOR("Rongjun Ying <rongjun.ying@csr.com>, "
1807 "Yuping Luo <yuping.luo@csr.com>, "
1808 "Barry Song <baohua.song@csr.com>");
1809 MODULE_DESCRIPTION("SIRFSOC pin control driver");
1810 MODULE_LICENSE("GPL");
1811