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Viresh Kumar52130b62012-03-28 22:27:07 +05301/*
2 * Driver for the ST Microelectronics SPEAr310 pinmux
3 *
4 * Copyright (C) 2012 ST Microelectronics
Viresh Kumar10d89352012-06-20 12:53:02 -07005 * Viresh Kumar <viresh.linux@gmail.com>
Viresh Kumar52130b62012-03-28 22:27:07 +05306 *
7 * This file is licensed under the terms of the GNU General Public
8 * License version 2. This program is licensed "as is" without any
9 * warranty of any kind, whether express or implied.
10 */
11
12#include <linux/err.h>
13#include <linux/init.h>
14#include <linux/module.h>
15#include <linux/of_device.h>
16#include <linux/platform_device.h>
17#include "pinctrl-spear3xx.h"
18
19#define DRIVER_NAME "spear310-pinmux"
20
21/* addresses */
22#define PMX_CONFIG_REG 0x08
23
24/* emi_cs_0_to_5_pins */
25static const unsigned emi_cs_0_to_5_pins[] = { 45, 46, 47, 48, 49, 50 };
26static struct spear_muxreg emi_cs_0_to_5_muxreg[] = {
27 {
28 .reg = PMX_CONFIG_REG,
29 .mask = PMX_TIMER_0_1_MASK | PMX_TIMER_2_3_MASK,
30 .val = 0,
31 },
32};
33
34static struct spear_modemux emi_cs_0_to_5_modemux[] = {
35 {
36 .muxregs = emi_cs_0_to_5_muxreg,
37 .nmuxregs = ARRAY_SIZE(emi_cs_0_to_5_muxreg),
38 },
39};
40
41static struct spear_pingroup emi_cs_0_to_5_pingroup = {
42 .name = "emi_cs_0_to_5_grp",
43 .pins = emi_cs_0_to_5_pins,
44 .npins = ARRAY_SIZE(emi_cs_0_to_5_pins),
45 .modemuxs = emi_cs_0_to_5_modemux,
46 .nmodemuxs = ARRAY_SIZE(emi_cs_0_to_5_modemux),
47};
48
49static const char *const emi_cs_0_to_5_grps[] = { "emi_cs_0_to_5_grp" };
50static struct spear_function emi_cs_0_to_5_function = {
51 .name = "emi",
52 .groups = emi_cs_0_to_5_grps,
53 .ngroups = ARRAY_SIZE(emi_cs_0_to_5_grps),
54};
55
56/* uart1_pins */
57static const unsigned uart1_pins[] = { 0, 1 };
58static struct spear_muxreg uart1_muxreg[] = {
59 {
60 .reg = PMX_CONFIG_REG,
61 .mask = PMX_FIRDA_MASK,
62 .val = 0,
63 },
64};
65
66static struct spear_modemux uart1_modemux[] = {
67 {
68 .muxregs = uart1_muxreg,
69 .nmuxregs = ARRAY_SIZE(uart1_muxreg),
70 },
71};
72
73static struct spear_pingroup uart1_pingroup = {
74 .name = "uart1_grp",
75 .pins = uart1_pins,
76 .npins = ARRAY_SIZE(uart1_pins),
77 .modemuxs = uart1_modemux,
78 .nmodemuxs = ARRAY_SIZE(uart1_modemux),
79};
80
81static const char *const uart1_grps[] = { "uart1_grp" };
82static struct spear_function uart1_function = {
83 .name = "uart1",
84 .groups = uart1_grps,
85 .ngroups = ARRAY_SIZE(uart1_grps),
86};
87
88/* uart2_pins */
89static const unsigned uart2_pins[] = { 43, 44 };
90static struct spear_muxreg uart2_muxreg[] = {
91 {
92 .reg = PMX_CONFIG_REG,
93 .mask = PMX_TIMER_0_1_MASK,
94 .val = 0,
95 },
96};
97
98static struct spear_modemux uart2_modemux[] = {
99 {
100 .muxregs = uart2_muxreg,
101 .nmuxregs = ARRAY_SIZE(uart2_muxreg),
102 },
103};
104
105static struct spear_pingroup uart2_pingroup = {
106 .name = "uart2_grp",
107 .pins = uart2_pins,
108 .npins = ARRAY_SIZE(uart2_pins),
109 .modemuxs = uart2_modemux,
110 .nmodemuxs = ARRAY_SIZE(uart2_modemux),
111};
112
113static const char *const uart2_grps[] = { "uart2_grp" };
114static struct spear_function uart2_function = {
115 .name = "uart2",
116 .groups = uart2_grps,
117 .ngroups = ARRAY_SIZE(uart2_grps),
118};
119
120/* uart3_pins */
121static const unsigned uart3_pins[] = { 37, 38 };
122static struct spear_muxreg uart3_muxreg[] = {
123 {
124 .reg = PMX_CONFIG_REG,
125 .mask = PMX_UART0_MODEM_MASK,
126 .val = 0,
127 },
128};
129
130static struct spear_modemux uart3_modemux[] = {
131 {
132 .muxregs = uart3_muxreg,
133 .nmuxregs = ARRAY_SIZE(uart3_muxreg),
134 },
135};
136
137static struct spear_pingroup uart3_pingroup = {
138 .name = "uart3_grp",
139 .pins = uart3_pins,
140 .npins = ARRAY_SIZE(uart3_pins),
141 .modemuxs = uart3_modemux,
142 .nmodemuxs = ARRAY_SIZE(uart3_modemux),
143};
144
145static const char *const uart3_grps[] = { "uart3_grp" };
146static struct spear_function uart3_function = {
147 .name = "uart3",
148 .groups = uart3_grps,
149 .ngroups = ARRAY_SIZE(uart3_grps),
150};
151
152/* uart4_pins */
153static const unsigned uart4_pins[] = { 39, 40 };
154static struct spear_muxreg uart4_muxreg[] = {
155 {
156 .reg = PMX_CONFIG_REG,
157 .mask = PMX_UART0_MODEM_MASK,
158 .val = 0,
159 },
160};
161
162static struct spear_modemux uart4_modemux[] = {
163 {
164 .muxregs = uart4_muxreg,
165 .nmuxregs = ARRAY_SIZE(uart4_muxreg),
166 },
167};
168
169static struct spear_pingroup uart4_pingroup = {
170 .name = "uart4_grp",
171 .pins = uart4_pins,
172 .npins = ARRAY_SIZE(uart4_pins),
173 .modemuxs = uart4_modemux,
174 .nmodemuxs = ARRAY_SIZE(uart4_modemux),
175};
176
177static const char *const uart4_grps[] = { "uart4_grp" };
178static struct spear_function uart4_function = {
179 .name = "uart4",
180 .groups = uart4_grps,
181 .ngroups = ARRAY_SIZE(uart4_grps),
182};
183
184/* uart5_pins */
185static const unsigned uart5_pins[] = { 41, 42 };
186static struct spear_muxreg uart5_muxreg[] = {
187 {
188 .reg = PMX_CONFIG_REG,
189 .mask = PMX_UART0_MODEM_MASK,
190 .val = 0,
191 },
192};
193
194static struct spear_modemux uart5_modemux[] = {
195 {
196 .muxregs = uart5_muxreg,
197 .nmuxregs = ARRAY_SIZE(uart5_muxreg),
198 },
199};
200
201static struct spear_pingroup uart5_pingroup = {
202 .name = "uart5_grp",
203 .pins = uart5_pins,
204 .npins = ARRAY_SIZE(uart5_pins),
205 .modemuxs = uart5_modemux,
206 .nmodemuxs = ARRAY_SIZE(uart5_modemux),
207};
208
209static const char *const uart5_grps[] = { "uart5_grp" };
210static struct spear_function uart5_function = {
211 .name = "uart5",
212 .groups = uart5_grps,
213 .ngroups = ARRAY_SIZE(uart5_grps),
214};
215
216/* fsmc_pins */
217static const unsigned fsmc_pins[] = { 34, 35, 36 };
218static struct spear_muxreg fsmc_muxreg[] = {
219 {
220 .reg = PMX_CONFIG_REG,
221 .mask = PMX_SSP_CS_MASK,
222 .val = 0,
223 },
224};
225
226static struct spear_modemux fsmc_modemux[] = {
227 {
228 .muxregs = fsmc_muxreg,
229 .nmuxregs = ARRAY_SIZE(fsmc_muxreg),
230 },
231};
232
233static struct spear_pingroup fsmc_pingroup = {
234 .name = "fsmc_grp",
235 .pins = fsmc_pins,
236 .npins = ARRAY_SIZE(fsmc_pins),
237 .modemuxs = fsmc_modemux,
238 .nmodemuxs = ARRAY_SIZE(fsmc_modemux),
239};
240
241static const char *const fsmc_grps[] = { "fsmc_grp" };
242static struct spear_function fsmc_function = {
243 .name = "fsmc",
244 .groups = fsmc_grps,
245 .ngroups = ARRAY_SIZE(fsmc_grps),
246};
247
248/* rs485_0_pins */
249static const unsigned rs485_0_pins[] = { 19, 20, 21, 22, 23 };
250static struct spear_muxreg rs485_0_muxreg[] = {
251 {
252 .reg = PMX_CONFIG_REG,
253 .mask = PMX_MII_MASK,
254 .val = 0,
255 },
256};
257
258static struct spear_modemux rs485_0_modemux[] = {
259 {
260 .muxregs = rs485_0_muxreg,
261 .nmuxregs = ARRAY_SIZE(rs485_0_muxreg),
262 },
263};
264
265static struct spear_pingroup rs485_0_pingroup = {
266 .name = "rs485_0_grp",
267 .pins = rs485_0_pins,
268 .npins = ARRAY_SIZE(rs485_0_pins),
269 .modemuxs = rs485_0_modemux,
270 .nmodemuxs = ARRAY_SIZE(rs485_0_modemux),
271};
272
273static const char *const rs485_0_grps[] = { "rs485_0" };
274static struct spear_function rs485_0_function = {
275 .name = "rs485_0",
276 .groups = rs485_0_grps,
277 .ngroups = ARRAY_SIZE(rs485_0_grps),
278};
279
280/* rs485_1_pins */
281static const unsigned rs485_1_pins[] = { 14, 15, 16, 17, 18 };
282static struct spear_muxreg rs485_1_muxreg[] = {
283 {
284 .reg = PMX_CONFIG_REG,
285 .mask = PMX_MII_MASK,
286 .val = 0,
287 },
288};
289
290static struct spear_modemux rs485_1_modemux[] = {
291 {
292 .muxregs = rs485_1_muxreg,
293 .nmuxregs = ARRAY_SIZE(rs485_1_muxreg),
294 },
295};
296
297static struct spear_pingroup rs485_1_pingroup = {
298 .name = "rs485_1_grp",
299 .pins = rs485_1_pins,
300 .npins = ARRAY_SIZE(rs485_1_pins),
301 .modemuxs = rs485_1_modemux,
302 .nmodemuxs = ARRAY_SIZE(rs485_1_modemux),
303};
304
305static const char *const rs485_1_grps[] = { "rs485_1" };
306static struct spear_function rs485_1_function = {
307 .name = "rs485_1",
308 .groups = rs485_1_grps,
309 .ngroups = ARRAY_SIZE(rs485_1_grps),
310};
311
312/* tdm_pins */
313static const unsigned tdm_pins[] = { 10, 11, 12, 13 };
314static struct spear_muxreg tdm_muxreg[] = {
315 {
316 .reg = PMX_CONFIG_REG,
317 .mask = PMX_MII_MASK,
318 .val = 0,
319 },
320};
321
322static struct spear_modemux tdm_modemux[] = {
323 {
324 .muxregs = tdm_muxreg,
325 .nmuxregs = ARRAY_SIZE(tdm_muxreg),
326 },
327};
328
329static struct spear_pingroup tdm_pingroup = {
330 .name = "tdm_grp",
331 .pins = tdm_pins,
332 .npins = ARRAY_SIZE(tdm_pins),
333 .modemuxs = tdm_modemux,
334 .nmodemuxs = ARRAY_SIZE(tdm_modemux),
335};
336
337static const char *const tdm_grps[] = { "tdm_grp" };
338static struct spear_function tdm_function = {
339 .name = "tdm",
340 .groups = tdm_grps,
341 .ngroups = ARRAY_SIZE(tdm_grps),
342};
343
344/* pingroups */
345static struct spear_pingroup *spear310_pingroups[] = {
346 SPEAR3XX_COMMON_PINGROUPS,
347 &emi_cs_0_to_5_pingroup,
348 &uart1_pingroup,
349 &uart2_pingroup,
350 &uart3_pingroup,
351 &uart4_pingroup,
352 &uart5_pingroup,
353 &fsmc_pingroup,
354 &rs485_0_pingroup,
355 &rs485_1_pingroup,
356 &tdm_pingroup,
357};
358
359/* functions */
360static struct spear_function *spear310_functions[] = {
361 SPEAR3XX_COMMON_FUNCTIONS,
362 &emi_cs_0_to_5_function,
363 &uart1_function,
364 &uart2_function,
365 &uart3_function,
366 &uart4_function,
367 &uart5_function,
368 &fsmc_function,
369 &rs485_0_function,
370 &rs485_1_function,
371 &tdm_function,
372};
373
Kiran Padwal5dfe10b2014-08-11 16:47:50 +0530374static const struct of_device_id spear310_pinctrl_of_match[] = {
Viresh Kumar52130b62012-03-28 22:27:07 +0530375 {
376 .compatible = "st,spear310-pinmux",
377 },
378 {},
379};
380
Greg Kroah-Hartman150632b2012-12-21 13:10:23 -0800381static int spear310_pinctrl_probe(struct platform_device *pdev)
Viresh Kumar52130b62012-03-28 22:27:07 +0530382{
383 int ret;
384
385 spear3xx_machdata.groups = spear310_pingroups;
386 spear3xx_machdata.ngroups = ARRAY_SIZE(spear310_pingroups);
387 spear3xx_machdata.functions = spear310_functions;
388 spear3xx_machdata.nfunctions = ARRAY_SIZE(spear310_functions);
389
390 pmx_init_addr(&spear3xx_machdata, PMX_CONFIG_REG);
Viresh Kumarf4f8e562012-10-27 15:21:38 +0530391 pmx_init_gpio_pingroup_addr(spear3xx_machdata.gpio_pingroups,
392 spear3xx_machdata.ngpio_pingroups, PMX_CONFIG_REG);
Viresh Kumar52130b62012-03-28 22:27:07 +0530393
394 spear3xx_machdata.modes_supported = false;
395
396 ret = spear_pinctrl_probe(pdev, &spear3xx_machdata);
397 if (ret)
398 return ret;
399
400 return 0;
401}
402
Bill Pembertonf90f54b2012-11-19 13:26:06 -0500403static int spear310_pinctrl_remove(struct platform_device *pdev)
Viresh Kumar52130b62012-03-28 22:27:07 +0530404{
405 return spear_pinctrl_remove(pdev);
406}
407
408static struct platform_driver spear310_pinctrl_driver = {
409 .driver = {
410 .name = DRIVER_NAME,
411 .owner = THIS_MODULE,
412 .of_match_table = spear310_pinctrl_of_match,
413 },
414 .probe = spear310_pinctrl_probe,
Bill Pemberton2a36f082012-11-19 13:21:27 -0500415 .remove = spear310_pinctrl_remove,
Viresh Kumar52130b62012-03-28 22:27:07 +0530416};
417
418static int __init spear310_pinctrl_init(void)
419{
420 return platform_driver_register(&spear310_pinctrl_driver);
421}
422arch_initcall(spear310_pinctrl_init);
423
424static void __exit spear310_pinctrl_exit(void)
425{
426 platform_driver_unregister(&spear310_pinctrl_driver);
427}
428module_exit(spear310_pinctrl_exit);
429
Viresh Kumar10d89352012-06-20 12:53:02 -0700430MODULE_AUTHOR("Viresh Kumar <viresh.linux@gmail.com>");
Viresh Kumar52130b62012-03-28 22:27:07 +0530431MODULE_DESCRIPTION("ST Microelectronics SPEAr310 pinctrl driver");
432MODULE_LICENSE("GPL v2");
Axel Lin13ceb772013-08-20 13:58:00 +0800433MODULE_DEVICE_TABLE(of, spear310_pinctrl_of_match);