1 /*
2 * Copyright (c) 2012 Samsung Electronics.
3 * Abhilash Kesavan <a.kesavan@samsung.com>
4 *
5 * SPDX-License-Identifier: GPL-2.0+
6 */
7
8 #include <common.h>
9 #include <fdtdec.h>
10 #include <asm/gpio.h>
11 #include <asm/arch/pinmux.h>
12 #include <asm/arch/sromc.h>
13
exynos5_uart_config(int peripheral)14 static void exynos5_uart_config(int peripheral)
15 {
16 int i, start, count;
17
18 switch (peripheral) {
19 case PERIPH_ID_UART0:
20 start = EXYNOS5_GPIO_A00;
21 count = 4;
22 break;
23 case PERIPH_ID_UART1:
24 start = EXYNOS5_GPIO_D00;
25 count = 4;
26 break;
27 case PERIPH_ID_UART2:
28 start = EXYNOS5_GPIO_A10;
29 count = 4;
30 break;
31 case PERIPH_ID_UART3:
32 start = EXYNOS5_GPIO_A14;
33 count = 2;
34 break;
35 default:
36 debug("%s: invalid peripheral %d", __func__, peripheral);
37 return;
38 }
39 for (i = start; i < start + count; i++) {
40 gpio_set_pull(i, S5P_GPIO_PULL_NONE);
41 gpio_cfg_pin(i, S5P_GPIO_FUNC(0x2));
42 }
43 }
44
exynos5420_uart_config(int peripheral)45 static void exynos5420_uart_config(int peripheral)
46 {
47 int i, start, count;
48
49 switch (peripheral) {
50 case PERIPH_ID_UART0:
51 start = EXYNOS5420_GPIO_A00;
52 count = 4;
53 break;
54 case PERIPH_ID_UART1:
55 start = EXYNOS5420_GPIO_A04;
56 count = 4;
57 break;
58 case PERIPH_ID_UART2:
59 start = EXYNOS5420_GPIO_A10;
60 count = 4;
61 break;
62 case PERIPH_ID_UART3:
63 start = EXYNOS5420_GPIO_A14;
64 count = 2;
65 break;
66 default:
67 debug("%s: invalid peripheral %d", __func__, peripheral);
68 return;
69 }
70
71 for (i = start; i < start + count; i++) {
72 gpio_set_pull(i, S5P_GPIO_PULL_NONE);
73 gpio_cfg_pin(i, S5P_GPIO_FUNC(0x2));
74 }
75 }
76
exynos5_mmc_config(int peripheral,int flags)77 static int exynos5_mmc_config(int peripheral, int flags)
78 {
79 int i, start, start_ext, gpio_func = 0;
80
81 switch (peripheral) {
82 case PERIPH_ID_SDMMC0:
83 start = EXYNOS5_GPIO_C00;
84 start_ext = EXYNOS5_GPIO_C10;
85 gpio_func = S5P_GPIO_FUNC(0x2);
86 break;
87 case PERIPH_ID_SDMMC1:
88 start = EXYNOS5_GPIO_C20;
89 start_ext = 0;
90 break;
91 case PERIPH_ID_SDMMC2:
92 start = EXYNOS5_GPIO_C30;
93 start_ext = EXYNOS5_GPIO_C43;
94 gpio_func = S5P_GPIO_FUNC(0x3);
95 break;
96 case PERIPH_ID_SDMMC3:
97 start = EXYNOS5_GPIO_C40;
98 start_ext = 0;
99 break;
100 default:
101 debug("%s: invalid peripheral %d", __func__, peripheral);
102 return -1;
103 }
104 if ((flags & PINMUX_FLAG_8BIT_MODE) && !start_ext) {
105 debug("SDMMC device %d does not support 8bit mode",
106 peripheral);
107 return -1;
108 }
109 if (flags & PINMUX_FLAG_8BIT_MODE) {
110 for (i = start_ext; i <= (start_ext + 3); i++) {
111 gpio_cfg_pin(i, gpio_func);
112 gpio_set_pull(i, S5P_GPIO_PULL_UP);
113 gpio_set_drv(i, S5P_GPIO_DRV_4X);
114 }
115 }
116 for (i = start; i < (start + 2); i++) {
117 gpio_cfg_pin(i, S5P_GPIO_FUNC(0x2));
118 gpio_set_pull(i, S5P_GPIO_PULL_NONE);
119 gpio_set_drv(i, S5P_GPIO_DRV_4X);
120 }
121 for (i = (start + 3); i <= (start + 6); i++) {
122 gpio_cfg_pin(i, S5P_GPIO_FUNC(0x2));
123 gpio_set_pull(i, S5P_GPIO_PULL_UP);
124 gpio_set_drv(i, S5P_GPIO_DRV_4X);
125 }
126
127 return 0;
128 }
129
exynos5420_mmc_config(int peripheral,int flags)130 static int exynos5420_mmc_config(int peripheral, int flags)
131 {
132 int i, start = 0, start_ext = 0;
133
134 switch (peripheral) {
135 case PERIPH_ID_SDMMC0:
136 start = EXYNOS5420_GPIO_C00;
137 start_ext = EXYNOS5420_GPIO_C30;
138 break;
139 case PERIPH_ID_SDMMC1:
140 start = EXYNOS5420_GPIO_C10;
141 start_ext = EXYNOS5420_GPIO_D14;
142 break;
143 case PERIPH_ID_SDMMC2:
144 start = EXYNOS5420_GPIO_C20;
145 start_ext = 0;
146 break;
147 default:
148 start = 0;
149 debug("%s: invalid peripheral %d", __func__, peripheral);
150 return -1;
151 }
152
153 if ((flags & PINMUX_FLAG_8BIT_MODE) && !start_ext) {
154 debug("SDMMC device %d does not support 8bit mode",
155 peripheral);
156 return -1;
157 }
158
159 if (flags & PINMUX_FLAG_8BIT_MODE) {
160 for (i = start_ext; i <= (start_ext + 3); i++) {
161 gpio_cfg_pin(i, S5P_GPIO_FUNC(0x2));
162 gpio_set_pull(i, S5P_GPIO_PULL_UP);
163 gpio_set_drv(i, S5P_GPIO_DRV_4X);
164 }
165 }
166
167 for (i = start; i < (start + 3); i++) {
168 /*
169 * MMC0 is intended to be used for eMMC. The
170 * card detect pin is used as a VDDEN signal to
171 * power on the eMMC. The 5420 iROM makes
172 * this same assumption.
173 */
174 if ((peripheral == PERIPH_ID_SDMMC0) && (i == (start + 2))) {
175 #ifndef CONFIG_SPL_BUILD
176 gpio_request(i, "sdmmc0_vdden");
177 #endif
178 gpio_set_value(i, 1);
179 gpio_cfg_pin(i, S5P_GPIO_OUTPUT);
180 } else {
181 gpio_cfg_pin(i, S5P_GPIO_FUNC(0x2));
182 }
183 gpio_set_pull(i, S5P_GPIO_PULL_NONE);
184 gpio_set_drv(i, S5P_GPIO_DRV_4X);
185 }
186
187 for (i = (start + 3); i <= (start + 6); i++) {
188 gpio_cfg_pin(i, S5P_GPIO_FUNC(0x2));
189 gpio_set_pull(i, S5P_GPIO_PULL_UP);
190 gpio_set_drv(i, S5P_GPIO_DRV_4X);
191 }
192
193 return 0;
194 }
195
exynos5_sromc_config(int flags)196 static void exynos5_sromc_config(int flags)
197 {
198 int i;
199
200 /*
201 * SROM:CS1 and EBI
202 *
203 * GPY0[0] SROM_CSn[0]
204 * GPY0[1] SROM_CSn[1](2)
205 * GPY0[2] SROM_CSn[2]
206 * GPY0[3] SROM_CSn[3]
207 * GPY0[4] EBI_OEn(2)
208 * GPY0[5] EBI_EEn(2)
209 *
210 * GPY1[0] EBI_BEn[0](2)
211 * GPY1[1] EBI_BEn[1](2)
212 * GPY1[2] SROM_WAIT(2)
213 * GPY1[3] EBI_DATA_RDn(2)
214 */
215 gpio_cfg_pin(EXYNOS5_GPIO_Y00 + (flags & PINMUX_FLAG_BANK),
216 S5P_GPIO_FUNC(2));
217 gpio_cfg_pin(EXYNOS5_GPIO_Y04, S5P_GPIO_FUNC(2));
218 gpio_cfg_pin(EXYNOS5_GPIO_Y05, S5P_GPIO_FUNC(2));
219
220 for (i = 0; i < 4; i++)
221 gpio_cfg_pin(EXYNOS5_GPIO_Y10 + i, S5P_GPIO_FUNC(2));
222
223 /*
224 * EBI: 8 Addrss Lines
225 *
226 * GPY3[0] EBI_ADDR[0](2)
227 * GPY3[1] EBI_ADDR[1](2)
228 * GPY3[2] EBI_ADDR[2](2)
229 * GPY3[3] EBI_ADDR[3](2)
230 * GPY3[4] EBI_ADDR[4](2)
231 * GPY3[5] EBI_ADDR[5](2)
232 * GPY3[6] EBI_ADDR[6](2)
233 * GPY3[7] EBI_ADDR[7](2)
234 *
235 * EBI: 16 Data Lines
236 *
237 * GPY5[0] EBI_DATA[0](2)
238 * GPY5[1] EBI_DATA[1](2)
239 * GPY5[2] EBI_DATA[2](2)
240 * GPY5[3] EBI_DATA[3](2)
241 * GPY5[4] EBI_DATA[4](2)
242 * GPY5[5] EBI_DATA[5](2)
243 * GPY5[6] EBI_DATA[6](2)
244 * GPY5[7] EBI_DATA[7](2)
245 *
246 * GPY6[0] EBI_DATA[8](2)
247 * GPY6[1] EBI_DATA[9](2)
248 * GPY6[2] EBI_DATA[10](2)
249 * GPY6[3] EBI_DATA[11](2)
250 * GPY6[4] EBI_DATA[12](2)
251 * GPY6[5] EBI_DATA[13](2)
252 * GPY6[6] EBI_DATA[14](2)
253 * GPY6[7] EBI_DATA[15](2)
254 */
255 for (i = 0; i < 8; i++) {
256 gpio_cfg_pin(EXYNOS5_GPIO_Y30 + i, S5P_GPIO_FUNC(2));
257 gpio_set_pull(EXYNOS5_GPIO_Y30 + i, S5P_GPIO_PULL_UP);
258
259 gpio_cfg_pin(EXYNOS5_GPIO_Y50 + i, S5P_GPIO_FUNC(2));
260 gpio_set_pull(EXYNOS5_GPIO_Y50 + i, S5P_GPIO_PULL_UP);
261
262 gpio_cfg_pin(EXYNOS5_GPIO_Y60 + i, S5P_GPIO_FUNC(2));
263 gpio_set_pull(EXYNOS5_GPIO_Y60 + i, S5P_GPIO_PULL_UP);
264 }
265 }
266
exynos5_i2c_config(int peripheral,int flags)267 static void exynos5_i2c_config(int peripheral, int flags)
268 {
269 int func01, func23;
270
271 /* High-Speed I2C */
272 if (flags & PINMUX_FLAG_HS_MODE) {
273 func01 = 4;
274 func23 = 4;
275 } else {
276 func01 = 2;
277 func23 = 3;
278 }
279
280 switch (peripheral) {
281 case PERIPH_ID_I2C0:
282 gpio_cfg_pin(EXYNOS5_GPIO_B30, S5P_GPIO_FUNC(func01));
283 gpio_cfg_pin(EXYNOS5_GPIO_B31, S5P_GPIO_FUNC(func01));
284 break;
285 case PERIPH_ID_I2C1:
286 gpio_cfg_pin(EXYNOS5_GPIO_B32, S5P_GPIO_FUNC(func01));
287 gpio_cfg_pin(EXYNOS5_GPIO_B33, S5P_GPIO_FUNC(func01));
288 break;
289 case PERIPH_ID_I2C2:
290 gpio_cfg_pin(EXYNOS5_GPIO_A06, S5P_GPIO_FUNC(func23));
291 gpio_cfg_pin(EXYNOS5_GPIO_A07, S5P_GPIO_FUNC(func23));
292 break;
293 case PERIPH_ID_I2C3:
294 gpio_cfg_pin(EXYNOS5_GPIO_A12, S5P_GPIO_FUNC(func23));
295 gpio_cfg_pin(EXYNOS5_GPIO_A13, S5P_GPIO_FUNC(func23));
296 break;
297 case PERIPH_ID_I2C4:
298 gpio_cfg_pin(EXYNOS5_GPIO_A20, S5P_GPIO_FUNC(0x3));
299 gpio_cfg_pin(EXYNOS5_GPIO_A21, S5P_GPIO_FUNC(0x3));
300 break;
301 case PERIPH_ID_I2C5:
302 gpio_cfg_pin(EXYNOS5_GPIO_A22, S5P_GPIO_FUNC(0x3));
303 gpio_cfg_pin(EXYNOS5_GPIO_A23, S5P_GPIO_FUNC(0x3));
304 break;
305 case PERIPH_ID_I2C6:
306 gpio_cfg_pin(EXYNOS5_GPIO_B13, S5P_GPIO_FUNC(0x4));
307 gpio_cfg_pin(EXYNOS5_GPIO_B14, S5P_GPIO_FUNC(0x4));
308 break;
309 case PERIPH_ID_I2C7:
310 gpio_cfg_pin(EXYNOS5_GPIO_B22, S5P_GPIO_FUNC(0x3));
311 gpio_cfg_pin(EXYNOS5_GPIO_B23, S5P_GPIO_FUNC(0x3));
312 break;
313 }
314 }
315
exynos5420_i2c_config(int peripheral)316 static void exynos5420_i2c_config(int peripheral)
317 {
318 switch (peripheral) {
319 case PERIPH_ID_I2C0:
320 gpio_cfg_pin(EXYNOS5420_GPIO_B30, S5P_GPIO_FUNC(0x2));
321 gpio_cfg_pin(EXYNOS5420_GPIO_B31, S5P_GPIO_FUNC(0x2));
322 break;
323 case PERIPH_ID_I2C1:
324 gpio_cfg_pin(EXYNOS5420_GPIO_B32, S5P_GPIO_FUNC(0x2));
325 gpio_cfg_pin(EXYNOS5420_GPIO_B33, S5P_GPIO_FUNC(0x2));
326 break;
327 case PERIPH_ID_I2C2:
328 gpio_cfg_pin(EXYNOS5420_GPIO_A06, S5P_GPIO_FUNC(0x3));
329 gpio_cfg_pin(EXYNOS5420_GPIO_A07, S5P_GPIO_FUNC(0x3));
330 break;
331 case PERIPH_ID_I2C3:
332 gpio_cfg_pin(EXYNOS5420_GPIO_A12, S5P_GPIO_FUNC(0x3));
333 gpio_cfg_pin(EXYNOS5420_GPIO_A13, S5P_GPIO_FUNC(0x3));
334 break;
335 case PERIPH_ID_I2C4:
336 gpio_cfg_pin(EXYNOS5420_GPIO_A20, S5P_GPIO_FUNC(0x3));
337 gpio_cfg_pin(EXYNOS5420_GPIO_A21, S5P_GPIO_FUNC(0x3));
338 break;
339 case PERIPH_ID_I2C5:
340 gpio_cfg_pin(EXYNOS5420_GPIO_A22, S5P_GPIO_FUNC(0x3));
341 gpio_cfg_pin(EXYNOS5420_GPIO_A23, S5P_GPIO_FUNC(0x3));
342 break;
343 case PERIPH_ID_I2C6:
344 gpio_cfg_pin(EXYNOS5420_GPIO_B13, S5P_GPIO_FUNC(0x4));
345 gpio_cfg_pin(EXYNOS5420_GPIO_B14, S5P_GPIO_FUNC(0x4));
346 break;
347 case PERIPH_ID_I2C7:
348 gpio_cfg_pin(EXYNOS5420_GPIO_B22, S5P_GPIO_FUNC(0x3));
349 gpio_cfg_pin(EXYNOS5420_GPIO_B23, S5P_GPIO_FUNC(0x3));
350 break;
351 case PERIPH_ID_I2C8:
352 gpio_cfg_pin(EXYNOS5420_GPIO_B34, S5P_GPIO_FUNC(0x2));
353 gpio_cfg_pin(EXYNOS5420_GPIO_B35, S5P_GPIO_FUNC(0x2));
354 break;
355 case PERIPH_ID_I2C9:
356 gpio_cfg_pin(EXYNOS5420_GPIO_B36, S5P_GPIO_FUNC(0x2));
357 gpio_cfg_pin(EXYNOS5420_GPIO_B37, S5P_GPIO_FUNC(0x2));
358 break;
359 case PERIPH_ID_I2C10:
360 gpio_cfg_pin(EXYNOS5420_GPIO_B40, S5P_GPIO_FUNC(0x2));
361 gpio_cfg_pin(EXYNOS5420_GPIO_B41, S5P_GPIO_FUNC(0x2));
362 break;
363 }
364 }
365
exynos5_i2s_config(int peripheral)366 static void exynos5_i2s_config(int peripheral)
367 {
368 int i;
369
370 switch (peripheral) {
371 case PERIPH_ID_I2S0:
372 for (i = 0; i < 5; i++)
373 gpio_cfg_pin(EXYNOS5_GPIO_Z0 + i, S5P_GPIO_FUNC(0x02));
374 break;
375 case PERIPH_ID_I2S1:
376 for (i = 0; i < 5; i++)
377 gpio_cfg_pin(EXYNOS5_GPIO_B00 + i, S5P_GPIO_FUNC(0x02));
378 break;
379 }
380 }
381
exynos5_spi_config(int peripheral)382 void exynos5_spi_config(int peripheral)
383 {
384 int cfg = 0, pin = 0, i;
385
386 switch (peripheral) {
387 case PERIPH_ID_SPI0:
388 cfg = S5P_GPIO_FUNC(0x2);
389 pin = EXYNOS5_GPIO_A20;
390 break;
391 case PERIPH_ID_SPI1:
392 cfg = S5P_GPIO_FUNC(0x2);
393 pin = EXYNOS5_GPIO_A24;
394 break;
395 case PERIPH_ID_SPI2:
396 cfg = S5P_GPIO_FUNC(0x5);
397 pin = EXYNOS5_GPIO_B11;
398 break;
399 case PERIPH_ID_SPI3:
400 cfg = S5P_GPIO_FUNC(0x2);
401 pin = EXYNOS5_GPIO_F10;
402 break;
403 case PERIPH_ID_SPI4:
404 for (i = 0; i < 2; i++) {
405 gpio_cfg_pin(EXYNOS5_GPIO_F02 + i, S5P_GPIO_FUNC(0x4));
406 gpio_cfg_pin(EXYNOS5_GPIO_E04 + i, S5P_GPIO_FUNC(0x4));
407 }
408 break;
409 }
410 if (peripheral != PERIPH_ID_SPI4) {
411 for (i = pin; i < pin + 4; i++)
412 gpio_cfg_pin(i, cfg);
413 }
414 }
415
exynos5420_spi_config(int peripheral)416 void exynos5420_spi_config(int peripheral)
417 {
418 int cfg, pin, i;
419
420 switch (peripheral) {
421 case PERIPH_ID_SPI0:
422 pin = EXYNOS5420_GPIO_A20;
423 cfg = S5P_GPIO_FUNC(0x2);
424 break;
425 case PERIPH_ID_SPI1:
426 pin = EXYNOS5420_GPIO_A24;
427 cfg = S5P_GPIO_FUNC(0x2);
428 break;
429 case PERIPH_ID_SPI2:
430 pin = EXYNOS5420_GPIO_B11;
431 cfg = S5P_GPIO_FUNC(0x5);
432 break;
433 case PERIPH_ID_SPI3:
434 pin = EXYNOS5420_GPIO_F10;
435 cfg = S5P_GPIO_FUNC(0x2);
436 break;
437 case PERIPH_ID_SPI4:
438 cfg = 0;
439 pin = 0;
440 break;
441 default:
442 cfg = 0;
443 pin = 0;
444 debug("%s: invalid peripheral %d", __func__, peripheral);
445 return;
446 }
447
448 if (peripheral != PERIPH_ID_SPI4) {
449 for (i = pin; i < pin + 4; i++)
450 gpio_cfg_pin(i, cfg);
451 } else {
452 for (i = 0; i < 2; i++) {
453 gpio_cfg_pin(EXYNOS5420_GPIO_F02 + i,
454 S5P_GPIO_FUNC(0x4));
455 gpio_cfg_pin(EXYNOS5420_GPIO_E04 + i,
456 S5P_GPIO_FUNC(0x4));
457 }
458 }
459 }
460
exynos5_pinmux_config(int peripheral,int flags)461 static int exynos5_pinmux_config(int peripheral, int flags)
462 {
463 switch (peripheral) {
464 case PERIPH_ID_UART0:
465 case PERIPH_ID_UART1:
466 case PERIPH_ID_UART2:
467 case PERIPH_ID_UART3:
468 exynos5_uart_config(peripheral);
469 break;
470 case PERIPH_ID_SDMMC0:
471 case PERIPH_ID_SDMMC1:
472 case PERIPH_ID_SDMMC2:
473 case PERIPH_ID_SDMMC3:
474 return exynos5_mmc_config(peripheral, flags);
475 case PERIPH_ID_SROMC:
476 exynos5_sromc_config(flags);
477 break;
478 case PERIPH_ID_I2C0:
479 case PERIPH_ID_I2C1:
480 case PERIPH_ID_I2C2:
481 case PERIPH_ID_I2C3:
482 case PERIPH_ID_I2C4:
483 case PERIPH_ID_I2C5:
484 case PERIPH_ID_I2C6:
485 case PERIPH_ID_I2C7:
486 exynos5_i2c_config(peripheral, flags);
487 break;
488 case PERIPH_ID_I2S0:
489 case PERIPH_ID_I2S1:
490 exynos5_i2s_config(peripheral);
491 break;
492 case PERIPH_ID_SPI0:
493 case PERIPH_ID_SPI1:
494 case PERIPH_ID_SPI2:
495 case PERIPH_ID_SPI3:
496 case PERIPH_ID_SPI4:
497 exynos5_spi_config(peripheral);
498 break;
499 case PERIPH_ID_DPHPD:
500 /* Set Hotplug detect for DP */
501 gpio_cfg_pin(EXYNOS5_GPIO_X07, S5P_GPIO_FUNC(0x3));
502
503 /*
504 * Hotplug detect should have an external pullup; disable the
505 * internal pulldown so they don't fight.
506 */
507 gpio_set_pull(EXYNOS5_GPIO_X07, S5P_GPIO_PULL_NONE);
508 break;
509 case PERIPH_ID_PWM0:
510 gpio_cfg_pin(EXYNOS5_GPIO_B20, S5P_GPIO_FUNC(2));
511 break;
512 default:
513 debug("%s: invalid peripheral %d", __func__, peripheral);
514 return -1;
515 }
516
517 return 0;
518 }
519
exynos5420_pinmux_config(int peripheral,int flags)520 static int exynos5420_pinmux_config(int peripheral, int flags)
521 {
522 switch (peripheral) {
523 case PERIPH_ID_UART0:
524 case PERIPH_ID_UART1:
525 case PERIPH_ID_UART2:
526 case PERIPH_ID_UART3:
527 exynos5420_uart_config(peripheral);
528 break;
529 case PERIPH_ID_SDMMC0:
530 case PERIPH_ID_SDMMC1:
531 case PERIPH_ID_SDMMC2:
532 case PERIPH_ID_SDMMC3:
533 return exynos5420_mmc_config(peripheral, flags);
534 case PERIPH_ID_SPI0:
535 case PERIPH_ID_SPI1:
536 case PERIPH_ID_SPI2:
537 case PERIPH_ID_SPI3:
538 case PERIPH_ID_SPI4:
539 exynos5420_spi_config(peripheral);
540 break;
541 case PERIPH_ID_I2C0:
542 case PERIPH_ID_I2C1:
543 case PERIPH_ID_I2C2:
544 case PERIPH_ID_I2C3:
545 case PERIPH_ID_I2C4:
546 case PERIPH_ID_I2C5:
547 case PERIPH_ID_I2C6:
548 case PERIPH_ID_I2C7:
549 case PERIPH_ID_I2C8:
550 case PERIPH_ID_I2C9:
551 case PERIPH_ID_I2C10:
552 exynos5420_i2c_config(peripheral);
553 break;
554 case PERIPH_ID_PWM0:
555 gpio_cfg_pin(EXYNOS5420_GPIO_B20, S5P_GPIO_FUNC(2));
556 break;
557 default:
558 debug("%s: invalid peripheral %d", __func__, peripheral);
559 return -1;
560 }
561
562 return 0;
563 }
564
exynos4_i2c_config(int peripheral,int flags)565 static void exynos4_i2c_config(int peripheral, int flags)
566 {
567 switch (peripheral) {
568 case PERIPH_ID_I2C0:
569 gpio_cfg_pin(EXYNOS4_GPIO_D10, S5P_GPIO_FUNC(0x2));
570 gpio_cfg_pin(EXYNOS4_GPIO_D11, S5P_GPIO_FUNC(0x2));
571 break;
572 case PERIPH_ID_I2C1:
573 gpio_cfg_pin(EXYNOS4_GPIO_D12, S5P_GPIO_FUNC(0x2));
574 gpio_cfg_pin(EXYNOS4_GPIO_D13, S5P_GPIO_FUNC(0x2));
575 break;
576 case PERIPH_ID_I2C2:
577 gpio_cfg_pin(EXYNOS4_GPIO_A06, S5P_GPIO_FUNC(0x3));
578 gpio_cfg_pin(EXYNOS4_GPIO_A07, S5P_GPIO_FUNC(0x3));
579 break;
580 case PERIPH_ID_I2C3:
581 gpio_cfg_pin(EXYNOS4_GPIO_A12, S5P_GPIO_FUNC(0x3));
582 gpio_cfg_pin(EXYNOS4_GPIO_A13, S5P_GPIO_FUNC(0x3));
583 break;
584 case PERIPH_ID_I2C4:
585 gpio_cfg_pin(EXYNOS4_GPIO_B2, S5P_GPIO_FUNC(0x3));
586 gpio_cfg_pin(EXYNOS4_GPIO_B3, S5P_GPIO_FUNC(0x3));
587 break;
588 case PERIPH_ID_I2C5:
589 gpio_cfg_pin(EXYNOS4_GPIO_B6, S5P_GPIO_FUNC(0x3));
590 gpio_cfg_pin(EXYNOS4_GPIO_B7, S5P_GPIO_FUNC(0x3));
591 break;
592 case PERIPH_ID_I2C6:
593 gpio_cfg_pin(EXYNOS4_GPIO_C13, S5P_GPIO_FUNC(0x4));
594 gpio_cfg_pin(EXYNOS4_GPIO_C14, S5P_GPIO_FUNC(0x4));
595 break;
596 case PERIPH_ID_I2C7:
597 gpio_cfg_pin(EXYNOS4_GPIO_D02, S5P_GPIO_FUNC(0x3));
598 gpio_cfg_pin(EXYNOS4_GPIO_D03, S5P_GPIO_FUNC(0x3));
599 break;
600 }
601 }
602
exynos4_mmc_config(int peripheral,int flags)603 static int exynos4_mmc_config(int peripheral, int flags)
604 {
605 int i, start = 0, start_ext = 0;
606 unsigned int func, ext_func;
607
608 switch (peripheral) {
609 case PERIPH_ID_SDMMC0:
610 start = EXYNOS4_GPIO_K00;
611 start_ext = EXYNOS4_GPIO_K13;
612 func = S5P_GPIO_FUNC(0x2);
613 ext_func = S5P_GPIO_FUNC(0x3);
614 break;
615 case PERIPH_ID_SDMMC2:
616 start = EXYNOS4_GPIO_K20;
617 start_ext = EXYNOS4_GPIO_K33;
618 func = S5P_GPIO_FUNC(0x2);
619 ext_func = S5P_GPIO_FUNC(0x3);
620 break;
621 case PERIPH_ID_SDMMC4:
622 start = EXYNOS4_GPIO_K00;
623 start_ext = EXYNOS4_GPIO_K13;
624 func = S5P_GPIO_FUNC(0x3);
625 ext_func = S5P_GPIO_FUNC(0x4);
626 break;
627 default:
628 return -1;
629 }
630 for (i = start; i < (start + 7); i++) {
631 if (i == (start + 2))
632 continue;
633 gpio_cfg_pin(i, func);
634 gpio_set_pull(i, S5P_GPIO_PULL_NONE);
635 gpio_set_drv(i, S5P_GPIO_DRV_4X);
636 }
637 /* SDMMC2 do not use 8bit mode at exynos4 */
638 if (flags & PINMUX_FLAG_8BIT_MODE) {
639 for (i = start_ext; i < (start_ext + 4); i++) {
640 gpio_cfg_pin(i, ext_func);
641 gpio_set_pull(i, S5P_GPIO_PULL_NONE);
642 gpio_set_drv(i, S5P_GPIO_DRV_4X);
643 }
644 }
645
646 return 0;
647 }
648
exynos4_uart_config(int peripheral)649 static void exynos4_uart_config(int peripheral)
650 {
651 int i, start, count;
652
653 switch (peripheral) {
654 case PERIPH_ID_UART0:
655 start = EXYNOS4_GPIO_A00;
656 count = 4;
657 break;
658 case PERIPH_ID_UART1:
659 start = EXYNOS4_GPIO_A04;
660 count = 4;
661 break;
662 case PERIPH_ID_UART2:
663 start = EXYNOS4_GPIO_A10;
664 count = 4;
665 break;
666 case PERIPH_ID_UART3:
667 start = EXYNOS4_GPIO_A14;
668 count = 2;
669 break;
670 default:
671 debug("%s: invalid peripheral %d", __func__, peripheral);
672 return;
673 }
674 for (i = start; i < (start + count); i++) {
675 gpio_set_pull(i, S5P_GPIO_PULL_NONE);
676 gpio_cfg_pin(i, S5P_GPIO_FUNC(0x2));
677 }
678 }
679
exynos4x12_i2c_config(int peripheral,int flags)680 static void exynos4x12_i2c_config(int peripheral, int flags)
681 {
682 switch (peripheral) {
683 case PERIPH_ID_I2C0:
684 gpio_cfg_pin(EXYNOS4X12_GPIO_D10, S5P_GPIO_FUNC(0x2));
685 gpio_cfg_pin(EXYNOS4X12_GPIO_D11, S5P_GPIO_FUNC(0x2));
686 break;
687 case PERIPH_ID_I2C1:
688 gpio_cfg_pin(EXYNOS4X12_GPIO_D12, S5P_GPIO_FUNC(0x2));
689 gpio_cfg_pin(EXYNOS4X12_GPIO_D13, S5P_GPIO_FUNC(0x2));
690 break;
691 case PERIPH_ID_I2C2:
692 gpio_cfg_pin(EXYNOS4X12_GPIO_A06, S5P_GPIO_FUNC(0x3));
693 gpio_cfg_pin(EXYNOS4X12_GPIO_A07, S5P_GPIO_FUNC(0x3));
694 break;
695 case PERIPH_ID_I2C3:
696 gpio_cfg_pin(EXYNOS4X12_GPIO_A12, S5P_GPIO_FUNC(0x3));
697 gpio_cfg_pin(EXYNOS4X12_GPIO_A13, S5P_GPIO_FUNC(0x3));
698 break;
699 case PERIPH_ID_I2C4:
700 gpio_cfg_pin(EXYNOS4X12_GPIO_B2, S5P_GPIO_FUNC(0x3));
701 gpio_cfg_pin(EXYNOS4X12_GPIO_B3, S5P_GPIO_FUNC(0x3));
702 break;
703 case PERIPH_ID_I2C5:
704 gpio_cfg_pin(EXYNOS4X12_GPIO_B6, S5P_GPIO_FUNC(0x3));
705 gpio_cfg_pin(EXYNOS4X12_GPIO_B7, S5P_GPIO_FUNC(0x3));
706 break;
707 case PERIPH_ID_I2C6:
708 gpio_cfg_pin(EXYNOS4X12_GPIO_C13, S5P_GPIO_FUNC(0x4));
709 gpio_cfg_pin(EXYNOS4X12_GPIO_C14, S5P_GPIO_FUNC(0x4));
710 break;
711 case PERIPH_ID_I2C7:
712 gpio_cfg_pin(EXYNOS4X12_GPIO_D02, S5P_GPIO_FUNC(0x3));
713 gpio_cfg_pin(EXYNOS4X12_GPIO_D03, S5P_GPIO_FUNC(0x3));
714 break;
715 }
716 }
717
exynos4x12_mmc_config(int peripheral,int flags)718 static int exynos4x12_mmc_config(int peripheral, int flags)
719 {
720 int i, start = 0, start_ext = 0;
721 unsigned int func, ext_func;
722
723 switch (peripheral) {
724 case PERIPH_ID_SDMMC0:
725 start = EXYNOS4X12_GPIO_K00;
726 start_ext = EXYNOS4X12_GPIO_K13;
727 func = S5P_GPIO_FUNC(0x2);
728 ext_func = S5P_GPIO_FUNC(0x3);
729 break;
730 case PERIPH_ID_SDMMC2:
731 start = EXYNOS4X12_GPIO_K20;
732 start_ext = EXYNOS4X12_GPIO_K33;
733 func = S5P_GPIO_FUNC(0x2);
734 ext_func = S5P_GPIO_FUNC(0x3);
735 break;
736 case PERIPH_ID_SDMMC4:
737 start = EXYNOS4X12_GPIO_K00;
738 start_ext = EXYNOS4X12_GPIO_K13;
739 func = S5P_GPIO_FUNC(0x3);
740 ext_func = S5P_GPIO_FUNC(0x4);
741 break;
742 default:
743 return -1;
744 }
745 for (i = start; i < (start + 7); i++) {
746 gpio_set_pull(i, S5P_GPIO_PULL_NONE);
747 if (i == (start + 2))
748 continue;
749 gpio_cfg_pin(i, func);
750 gpio_set_drv(i, S5P_GPIO_DRV_4X);
751 }
752 if (flags & PINMUX_FLAG_8BIT_MODE) {
753 for (i = start_ext; i < (start_ext + 4); i++) {
754 gpio_cfg_pin(i, ext_func);
755 gpio_set_pull(i, S5P_GPIO_PULL_NONE);
756 gpio_set_drv(i, S5P_GPIO_DRV_4X);
757 }
758 }
759
760 return 0;
761 }
762
exynos4x12_uart_config(int peripheral)763 static void exynos4x12_uart_config(int peripheral)
764 {
765 int i, start, count;
766
767 switch (peripheral) {
768 case PERIPH_ID_UART0:
769 start = EXYNOS4X12_GPIO_A00;
770 count = 4;
771 break;
772 case PERIPH_ID_UART1:
773 start = EXYNOS4X12_GPIO_A04;
774 count = 4;
775 break;
776 case PERIPH_ID_UART2:
777 start = EXYNOS4X12_GPIO_A10;
778 count = 4;
779 break;
780 case PERIPH_ID_UART3:
781 start = EXYNOS4X12_GPIO_A14;
782 count = 2;
783 break;
784 default:
785 debug("%s: invalid peripheral %d", __func__, peripheral);
786 return;
787 }
788 for (i = start; i < (start + count); i++) {
789 gpio_set_pull(i, S5P_GPIO_PULL_NONE);
790 gpio_cfg_pin(i, S5P_GPIO_FUNC(0x2));
791 }
792 }
793
exynos4_pinmux_config(int peripheral,int flags)794 static int exynos4_pinmux_config(int peripheral, int flags)
795 {
796 switch (peripheral) {
797 case PERIPH_ID_UART0:
798 case PERIPH_ID_UART1:
799 case PERIPH_ID_UART2:
800 case PERIPH_ID_UART3:
801 exynos4_uart_config(peripheral);
802 break;
803 case PERIPH_ID_I2C0:
804 case PERIPH_ID_I2C1:
805 case PERIPH_ID_I2C2:
806 case PERIPH_ID_I2C3:
807 case PERIPH_ID_I2C4:
808 case PERIPH_ID_I2C5:
809 case PERIPH_ID_I2C6:
810 case PERIPH_ID_I2C7:
811 exynos4_i2c_config(peripheral, flags);
812 break;
813 case PERIPH_ID_SDMMC0:
814 case PERIPH_ID_SDMMC2:
815 case PERIPH_ID_SDMMC4:
816 return exynos4_mmc_config(peripheral, flags);
817 case PERIPH_ID_SDMMC1:
818 case PERIPH_ID_SDMMC3:
819 debug("SDMMC device %d not implemented\n", peripheral);
820 return -1;
821 default:
822 debug("%s: invalid peripheral %d", __func__, peripheral);
823 return -1;
824 }
825
826 return 0;
827 }
828
exynos4x12_pinmux_config(int peripheral,int flags)829 static int exynos4x12_pinmux_config(int peripheral, int flags)
830 {
831 switch (peripheral) {
832 case PERIPH_ID_UART0:
833 case PERIPH_ID_UART1:
834 case PERIPH_ID_UART2:
835 case PERIPH_ID_UART3:
836 exynos4x12_uart_config(peripheral);
837 break;
838 case PERIPH_ID_I2C0:
839 case PERIPH_ID_I2C1:
840 case PERIPH_ID_I2C2:
841 case PERIPH_ID_I2C3:
842 case PERIPH_ID_I2C4:
843 case PERIPH_ID_I2C5:
844 case PERIPH_ID_I2C6:
845 case PERIPH_ID_I2C7:
846 exynos4x12_i2c_config(peripheral, flags);
847 break;
848 case PERIPH_ID_SDMMC0:
849 case PERIPH_ID_SDMMC2:
850 case PERIPH_ID_SDMMC4:
851 return exynos4x12_mmc_config(peripheral, flags);
852 case PERIPH_ID_SDMMC1:
853 case PERIPH_ID_SDMMC3:
854 debug("SDMMC device %d not implemented\n", peripheral);
855 return -1;
856 default:
857 debug("%s: invalid peripheral %d", __func__, peripheral);
858 return -1;
859 }
860
861 return 0;
862 }
863
exynos_pinmux_config(int peripheral,int flags)864 int exynos_pinmux_config(int peripheral, int flags)
865 {
866 if (cpu_is_exynos5()) {
867 if (proid_is_exynos5420() || proid_is_exynos5422())
868 return exynos5420_pinmux_config(peripheral, flags);
869 else if (proid_is_exynos5250())
870 return exynos5_pinmux_config(peripheral, flags);
871 } else if (cpu_is_exynos4()) {
872 if (proid_is_exynos4412())
873 return exynos4x12_pinmux_config(peripheral, flags);
874 else
875 return exynos4_pinmux_config(peripheral, flags);
876 }
877
878 debug("pinmux functionality not supported\n");
879
880 return -1;
881 }
882
883 #if CONFIG_IS_ENABLED(OF_CONTROL)
exynos4_pinmux_decode_periph_id(const void * blob,int node)884 static int exynos4_pinmux_decode_periph_id(const void *blob, int node)
885 {
886 int err;
887 u32 cell[3];
888
889 err = fdtdec_get_int_array(blob, node, "interrupts", cell,
890 ARRAY_SIZE(cell));
891 if (err) {
892 debug(" invalid peripheral id\n");
893 return PERIPH_ID_NONE;
894 }
895
896 return cell[1];
897 }
898
exynos5_pinmux_decode_periph_id(const void * blob,int node)899 static int exynos5_pinmux_decode_periph_id(const void *blob, int node)
900 {
901 int err;
902 u32 cell[3];
903
904 err = fdtdec_get_int_array(blob, node, "interrupts", cell,
905 ARRAY_SIZE(cell));
906 if (err)
907 return PERIPH_ID_NONE;
908
909 return cell[1];
910 }
911
pinmux_decode_periph_id(const void * blob,int node)912 int pinmux_decode_periph_id(const void *blob, int node)
913 {
914 if (cpu_is_exynos5())
915 return exynos5_pinmux_decode_periph_id(blob, node);
916 else if (cpu_is_exynos4())
917 return exynos4_pinmux_decode_periph_id(blob, node);
918
919 return PERIPH_ID_NONE;
920 }
921 #endif
922