Commit | Line | Data |
---|---|---|
f7e322d9 RM |
1 | // SPDX-License-Identifier: GPL-2.0 |
2 | /* Copyright (C) 2021 Rafał Miłecki <rafal@milecki.pl> */ | |
3 | ||
4 | #include <linux/err.h> | |
5 | #include <linux/io.h> | |
6 | #include <linux/mod_devicetable.h> | |
7 | #include <linux/module.h> | |
8 | #include <linux/pinctrl/pinconf-generic.h> | |
9 | #include <linux/pinctrl/pinctrl.h> | |
10 | #include <linux/pinctrl/pinmux.h> | |
11 | #include <linux/platform_device.h> | |
12 | #include <linux/slab.h> | |
13 | #include <linux/string_helpers.h> | |
14 | ||
15 | #include "../core.h" | |
16 | #include "../pinmux.h" | |
17 | ||
18 | #define BCM4908_NUM_PINS 86 | |
19 | ||
20 | #define BCM4908_TEST_PORT_BLOCK_EN_LSB 0x00 | |
21 | #define BCM4908_TEST_PORT_BLOCK_DATA_MSB 0x04 | |
22 | #define BCM4908_TEST_PORT_BLOCK_DATA_LSB 0x08 | |
23 | #define BCM4908_TEST_PORT_LSB_PINMUX_DATA_SHIFT 12 | |
24 | #define BCM4908_TEST_PORT_COMMAND 0x0c | |
25 | #define BCM4908_TEST_PORT_CMD_LOAD_MUX_REG 0x00000021 | |
26 | ||
27 | struct bcm4908_pinctrl { | |
28 | struct device *dev; | |
29 | void __iomem *base; | |
30 | struct mutex mutex; | |
31 | struct pinctrl_dev *pctldev; | |
32 | struct pinctrl_desc pctldesc; | |
33 | }; | |
34 | ||
35 | /* | |
36 | * Groups | |
37 | */ | |
38 | ||
39 | struct bcm4908_pinctrl_pin_setup { | |
40 | unsigned int number; | |
41 | unsigned int function; | |
42 | }; | |
43 | ||
44 | static const struct bcm4908_pinctrl_pin_setup led_0_pins_a[] = { | |
45 | { 0, 3 }, | |
46 | }; | |
47 | ||
48 | static const struct bcm4908_pinctrl_pin_setup led_1_pins_a[] = { | |
49 | { 1, 3 }, | |
50 | }; | |
51 | ||
52 | static const struct bcm4908_pinctrl_pin_setup led_2_pins_a[] = { | |
53 | { 2, 3 }, | |
54 | }; | |
55 | ||
56 | static const struct bcm4908_pinctrl_pin_setup led_3_pins_a[] = { | |
57 | { 3, 3 }, | |
58 | }; | |
59 | ||
60 | static const struct bcm4908_pinctrl_pin_setup led_4_pins_a[] = { | |
61 | { 4, 3 }, | |
62 | }; | |
63 | ||
64 | static const struct bcm4908_pinctrl_pin_setup led_5_pins_a[] = { | |
65 | { 5, 3 }, | |
66 | }; | |
67 | ||
68 | static const struct bcm4908_pinctrl_pin_setup led_6_pins_a[] = { | |
69 | { 6, 3 }, | |
70 | }; | |
71 | ||
72 | static const struct bcm4908_pinctrl_pin_setup led_7_pins_a[] = { | |
73 | { 7, 3 }, | |
74 | }; | |
75 | ||
76 | static const struct bcm4908_pinctrl_pin_setup led_8_pins_a[] = { | |
77 | { 8, 3 }, | |
78 | }; | |
79 | ||
80 | static const struct bcm4908_pinctrl_pin_setup led_9_pins_a[] = { | |
81 | { 9, 3 }, | |
82 | }; | |
83 | ||
84 | static const struct bcm4908_pinctrl_pin_setup led_10_pins_a[] = { | |
85 | { 10, 3 }, | |
86 | }; | |
87 | ||
88 | static const struct bcm4908_pinctrl_pin_setup led_11_pins_a[] = { | |
89 | { 11, 3 }, | |
90 | }; | |
91 | ||
92 | static const struct bcm4908_pinctrl_pin_setup led_12_pins_a[] = { | |
93 | { 12, 3 }, | |
94 | }; | |
95 | ||
96 | static const struct bcm4908_pinctrl_pin_setup led_13_pins_a[] = { | |
97 | { 13, 3 }, | |
98 | }; | |
99 | ||
100 | static const struct bcm4908_pinctrl_pin_setup led_14_pins_a[] = { | |
101 | { 14, 3 }, | |
102 | }; | |
103 | ||
104 | static const struct bcm4908_pinctrl_pin_setup led_15_pins_a[] = { | |
105 | { 15, 3 }, | |
106 | }; | |
107 | ||
108 | static const struct bcm4908_pinctrl_pin_setup led_16_pins_a[] = { | |
109 | { 16, 3 }, | |
110 | }; | |
111 | ||
112 | static const struct bcm4908_pinctrl_pin_setup led_17_pins_a[] = { | |
113 | { 17, 3 }, | |
114 | }; | |
115 | ||
116 | static const struct bcm4908_pinctrl_pin_setup led_18_pins_a[] = { | |
117 | { 18, 3 }, | |
118 | }; | |
119 | ||
120 | static const struct bcm4908_pinctrl_pin_setup led_19_pins_a[] = { | |
121 | { 19, 3 }, | |
122 | }; | |
123 | ||
124 | static const struct bcm4908_pinctrl_pin_setup led_20_pins_a[] = { | |
125 | { 20, 3 }, | |
126 | }; | |
127 | ||
128 | static const struct bcm4908_pinctrl_pin_setup led_21_pins_a[] = { | |
129 | { 21, 3 }, | |
130 | }; | |
131 | ||
132 | static const struct bcm4908_pinctrl_pin_setup led_22_pins_a[] = { | |
133 | { 22, 3 }, | |
134 | }; | |
135 | ||
136 | static const struct bcm4908_pinctrl_pin_setup led_23_pins_a[] = { | |
137 | { 23, 3 }, | |
138 | }; | |
139 | ||
140 | static const struct bcm4908_pinctrl_pin_setup led_24_pins_a[] = { | |
141 | { 24, 3 }, | |
142 | }; | |
143 | ||
144 | static const struct bcm4908_pinctrl_pin_setup led_25_pins_a[] = { | |
145 | { 25, 3 }, | |
146 | }; | |
147 | ||
148 | static const struct bcm4908_pinctrl_pin_setup led_26_pins_a[] = { | |
149 | { 26, 3 }, | |
150 | }; | |
151 | ||
152 | static const struct bcm4908_pinctrl_pin_setup led_27_pins_a[] = { | |
153 | { 27, 3 }, | |
154 | }; | |
155 | ||
156 | static const struct bcm4908_pinctrl_pin_setup led_28_pins_a[] = { | |
157 | { 28, 3 }, | |
158 | }; | |
159 | ||
160 | static const struct bcm4908_pinctrl_pin_setup led_29_pins_a[] = { | |
161 | { 29, 3 }, | |
162 | }; | |
163 | ||
164 | static const struct bcm4908_pinctrl_pin_setup led_30_pins_a[] = { | |
165 | { 30, 3 }, | |
166 | }; | |
167 | ||
168 | static const struct bcm4908_pinctrl_pin_setup led_31_pins_a[] = { | |
169 | { 31, 3 }, | |
170 | }; | |
171 | ||
172 | static const struct bcm4908_pinctrl_pin_setup led_10_pins_b[] = { | |
173 | { 8, 2 }, | |
174 | }; | |
175 | ||
176 | static const struct bcm4908_pinctrl_pin_setup led_11_pins_b[] = { | |
177 | { 9, 2 }, | |
178 | }; | |
179 | ||
180 | static const struct bcm4908_pinctrl_pin_setup led_12_pins_b[] = { | |
181 | { 0, 2 }, | |
182 | }; | |
183 | ||
184 | static const struct bcm4908_pinctrl_pin_setup led_13_pins_b[] = { | |
185 | { 1, 2 }, | |
186 | }; | |
187 | ||
188 | static const struct bcm4908_pinctrl_pin_setup led_31_pins_b[] = { | |
189 | { 30, 2 }, | |
190 | }; | |
191 | ||
192 | static const struct bcm4908_pinctrl_pin_setup hs_uart_pins[] = { | |
193 | { 10, 0 }, /* CTS */ | |
194 | { 11, 0 }, /* RTS */ | |
195 | { 12, 0 }, /* RXD */ | |
196 | { 13, 0 }, /* TXD */ | |
197 | }; | |
198 | ||
199 | static const struct bcm4908_pinctrl_pin_setup i2c_pins_a[] = { | |
200 | { 18, 0 }, /* SDA */ | |
201 | { 19, 0 }, /* SCL */ | |
202 | }; | |
203 | ||
204 | static const struct bcm4908_pinctrl_pin_setup i2c_pins_b[] = { | |
205 | { 22, 0 }, /* SDA */ | |
206 | { 23, 0 }, /* SCL */ | |
207 | }; | |
208 | ||
209 | static const struct bcm4908_pinctrl_pin_setup i2s_pins[] = { | |
210 | { 27, 0 }, /* MCLK */ | |
211 | { 28, 0 }, /* LRCK */ | |
212 | { 29, 0 }, /* SDATA */ | |
213 | { 30, 0 }, /* SCLK */ | |
214 | }; | |
215 | ||
216 | static const struct bcm4908_pinctrl_pin_setup nand_ctrl_pins[] = { | |
217 | { 32, 0 }, | |
218 | { 33, 0 }, | |
219 | { 34, 0 }, | |
220 | { 43, 0 }, | |
221 | { 44, 0 }, | |
222 | { 45, 0 }, | |
223 | { 56, 1 }, | |
224 | }; | |
225 | ||
226 | static const struct bcm4908_pinctrl_pin_setup nand_data_pins[] = { | |
227 | { 35, 0 }, | |
228 | { 36, 0 }, | |
229 | { 37, 0 }, | |
230 | { 38, 0 }, | |
231 | { 39, 0 }, | |
232 | { 40, 0 }, | |
233 | { 41, 0 }, | |
234 | { 42, 0 }, | |
235 | }; | |
236 | ||
237 | static const struct bcm4908_pinctrl_pin_setup emmc_ctrl_pins[] = { | |
238 | { 46, 0 }, | |
239 | { 47, 0 }, | |
240 | }; | |
241 | ||
242 | static const struct bcm4908_pinctrl_pin_setup usb0_pwr_pins[] = { | |
243 | { 63, 0 }, | |
244 | { 64, 0 }, | |
245 | }; | |
246 | ||
247 | static const struct bcm4908_pinctrl_pin_setup usb1_pwr_pins[] = { | |
248 | { 66, 0 }, | |
249 | { 67, 0 }, | |
250 | }; | |
251 | ||
252 | struct bcm4908_pinctrl_grp { | |
253 | const char *name; | |
254 | const struct bcm4908_pinctrl_pin_setup *pins; | |
255 | const unsigned int num_pins; | |
256 | }; | |
257 | ||
258 | static const struct bcm4908_pinctrl_grp bcm4908_pinctrl_grps[] = { | |
259 | { "led_0_grp_a", led_0_pins_a, ARRAY_SIZE(led_0_pins_a) }, | |
260 | { "led_1_grp_a", led_1_pins_a, ARRAY_SIZE(led_1_pins_a) }, | |
261 | { "led_2_grp_a", led_2_pins_a, ARRAY_SIZE(led_2_pins_a) }, | |
262 | { "led_3_grp_a", led_3_pins_a, ARRAY_SIZE(led_3_pins_a) }, | |
263 | { "led_4_grp_a", led_4_pins_a, ARRAY_SIZE(led_4_pins_a) }, | |
264 | { "led_5_grp_a", led_5_pins_a, ARRAY_SIZE(led_5_pins_a) }, | |
265 | { "led_6_grp_a", led_6_pins_a, ARRAY_SIZE(led_6_pins_a) }, | |
266 | { "led_7_grp_a", led_7_pins_a, ARRAY_SIZE(led_7_pins_a) }, | |
267 | { "led_8_grp_a", led_8_pins_a, ARRAY_SIZE(led_8_pins_a) }, | |
268 | { "led_9_grp_a", led_9_pins_a, ARRAY_SIZE(led_9_pins_a) }, | |
269 | { "led_10_grp_a", led_10_pins_a, ARRAY_SIZE(led_10_pins_a) }, | |
270 | { "led_11_grp_a", led_11_pins_a, ARRAY_SIZE(led_11_pins_a) }, | |
271 | { "led_12_grp_a", led_12_pins_a, ARRAY_SIZE(led_12_pins_a) }, | |
272 | { "led_13_grp_a", led_13_pins_a, ARRAY_SIZE(led_13_pins_a) }, | |
273 | { "led_14_grp_a", led_14_pins_a, ARRAY_SIZE(led_14_pins_a) }, | |
274 | { "led_15_grp_a", led_15_pins_a, ARRAY_SIZE(led_15_pins_a) }, | |
275 | { "led_16_grp_a", led_16_pins_a, ARRAY_SIZE(led_16_pins_a) }, | |
276 | { "led_17_grp_a", led_17_pins_a, ARRAY_SIZE(led_17_pins_a) }, | |
277 | { "led_18_grp_a", led_18_pins_a, ARRAY_SIZE(led_18_pins_a) }, | |
278 | { "led_19_grp_a", led_19_pins_a, ARRAY_SIZE(led_19_pins_a) }, | |
279 | { "led_20_grp_a", led_20_pins_a, ARRAY_SIZE(led_20_pins_a) }, | |
280 | { "led_21_grp_a", led_21_pins_a, ARRAY_SIZE(led_21_pins_a) }, | |
281 | { "led_22_grp_a", led_22_pins_a, ARRAY_SIZE(led_22_pins_a) }, | |
282 | { "led_23_grp_a", led_23_pins_a, ARRAY_SIZE(led_23_pins_a) }, | |
283 | { "led_24_grp_a", led_24_pins_a, ARRAY_SIZE(led_24_pins_a) }, | |
284 | { "led_25_grp_a", led_25_pins_a, ARRAY_SIZE(led_25_pins_a) }, | |
285 | { "led_26_grp_a", led_26_pins_a, ARRAY_SIZE(led_26_pins_a) }, | |
286 | { "led_27_grp_a", led_27_pins_a, ARRAY_SIZE(led_27_pins_a) }, | |
287 | { "led_28_grp_a", led_28_pins_a, ARRAY_SIZE(led_28_pins_a) }, | |
288 | { "led_29_grp_a", led_29_pins_a, ARRAY_SIZE(led_29_pins_a) }, | |
289 | { "led_30_grp_a", led_30_pins_a, ARRAY_SIZE(led_30_pins_a) }, | |
290 | { "led_31_grp_a", led_31_pins_a, ARRAY_SIZE(led_31_pins_a) }, | |
291 | { "led_10_grp_b", led_10_pins_b, ARRAY_SIZE(led_10_pins_b) }, | |
292 | { "led_11_grp_b", led_11_pins_b, ARRAY_SIZE(led_11_pins_b) }, | |
293 | { "led_12_grp_b", led_12_pins_b, ARRAY_SIZE(led_12_pins_b) }, | |
294 | { "led_13_grp_b", led_13_pins_b, ARRAY_SIZE(led_13_pins_b) }, | |
295 | { "led_31_grp_b", led_31_pins_b, ARRAY_SIZE(led_31_pins_b) }, | |
296 | { "hs_uart_grp", hs_uart_pins, ARRAY_SIZE(hs_uart_pins) }, | |
297 | { "i2c_grp_a", i2c_pins_a, ARRAY_SIZE(i2c_pins_a) }, | |
298 | { "i2c_grp_b", i2c_pins_b, ARRAY_SIZE(i2c_pins_b) }, | |
299 | { "i2s_grp", i2s_pins, ARRAY_SIZE(i2s_pins) }, | |
300 | { "nand_ctrl_grp", nand_ctrl_pins, ARRAY_SIZE(nand_ctrl_pins) }, | |
301 | { "nand_data_grp", nand_data_pins, ARRAY_SIZE(nand_data_pins) }, | |
302 | { "emmc_ctrl_grp", emmc_ctrl_pins, ARRAY_SIZE(emmc_ctrl_pins) }, | |
303 | { "usb0_pwr_grp", usb0_pwr_pins, ARRAY_SIZE(usb0_pwr_pins) }, | |
304 | { "usb1_pwr_grp", usb1_pwr_pins, ARRAY_SIZE(usb1_pwr_pins) }, | |
305 | }; | |
306 | ||
307 | /* | |
308 | * Functions | |
309 | */ | |
310 | ||
311 | struct bcm4908_pinctrl_function { | |
312 | const char *name; | |
313 | const char * const *groups; | |
314 | const unsigned int num_groups; | |
315 | }; | |
316 | ||
317 | static const char * const led_0_groups[] = { "led_0_grp_a" }; | |
318 | static const char * const led_1_groups[] = { "led_1_grp_a" }; | |
319 | static const char * const led_2_groups[] = { "led_2_grp_a" }; | |
320 | static const char * const led_3_groups[] = { "led_3_grp_a" }; | |
321 | static const char * const led_4_groups[] = { "led_4_grp_a" }; | |
322 | static const char * const led_5_groups[] = { "led_5_grp_a" }; | |
323 | static const char * const led_6_groups[] = { "led_6_grp_a" }; | |
324 | static const char * const led_7_groups[] = { "led_7_grp_a" }; | |
325 | static const char * const led_8_groups[] = { "led_8_grp_a" }; | |
326 | static const char * const led_9_groups[] = { "led_9_grp_a" }; | |
327 | static const char * const led_10_groups[] = { "led_10_grp_a", "led_10_grp_b" }; | |
328 | static const char * const led_11_groups[] = { "led_11_grp_a", "led_11_grp_b" }; | |
329 | static const char * const led_12_groups[] = { "led_12_grp_a", "led_12_grp_b" }; | |
330 | static const char * const led_13_groups[] = { "led_13_grp_a", "led_13_grp_b" }; | |
331 | static const char * const led_14_groups[] = { "led_14_grp_a" }; | |
332 | static const char * const led_15_groups[] = { "led_15_grp_a" }; | |
333 | static const char * const led_16_groups[] = { "led_16_grp_a" }; | |
334 | static const char * const led_17_groups[] = { "led_17_grp_a" }; | |
335 | static const char * const led_18_groups[] = { "led_18_grp_a" }; | |
336 | static const char * const led_19_groups[] = { "led_19_grp_a" }; | |
337 | static const char * const led_20_groups[] = { "led_20_grp_a" }; | |
338 | static const char * const led_21_groups[] = { "led_21_grp_a" }; | |
339 | static const char * const led_22_groups[] = { "led_22_grp_a" }; | |
340 | static const char * const led_23_groups[] = { "led_23_grp_a" }; | |
341 | static const char * const led_24_groups[] = { "led_24_grp_a" }; | |
342 | static const char * const led_25_groups[] = { "led_25_grp_a" }; | |
343 | static const char * const led_26_groups[] = { "led_26_grp_a" }; | |
344 | static const char * const led_27_groups[] = { "led_27_grp_a" }; | |
345 | static const char * const led_28_groups[] = { "led_28_grp_a" }; | |
346 | static const char * const led_29_groups[] = { "led_29_grp_a" }; | |
347 | static const char * const led_30_groups[] = { "led_30_grp_a" }; | |
348 | static const char * const led_31_groups[] = { "led_31_grp_a", "led_31_grp_b" }; | |
349 | static const char * const hs_uart_groups[] = { "hs_uart_grp" }; | |
350 | static const char * const i2c_groups[] = { "i2c_grp_a", "i2c_grp_b" }; | |
351 | static const char * const i2s_groups[] = { "i2s_grp" }; | |
352 | static const char * const nand_ctrl_groups[] = { "nand_ctrl_grp" }; | |
353 | static const char * const nand_data_groups[] = { "nand_data_grp" }; | |
354 | static const char * const emmc_ctrl_groups[] = { "emmc_ctrl_grp" }; | |
355 | static const char * const usb0_pwr_groups[] = { "usb0_pwr_grp" }; | |
356 | static const char * const usb1_pwr_groups[] = { "usb1_pwr_grp" }; | |
357 | ||
358 | static const struct bcm4908_pinctrl_function bcm4908_pinctrl_functions[] = { | |
359 | { "led_0", led_0_groups, ARRAY_SIZE(led_0_groups) }, | |
360 | { "led_1", led_1_groups, ARRAY_SIZE(led_1_groups) }, | |
361 | { "led_2", led_2_groups, ARRAY_SIZE(led_2_groups) }, | |
362 | { "led_3", led_3_groups, ARRAY_SIZE(led_3_groups) }, | |
363 | { "led_4", led_4_groups, ARRAY_SIZE(led_4_groups) }, | |
364 | { "led_5", led_5_groups, ARRAY_SIZE(led_5_groups) }, | |
365 | { "led_6", led_6_groups, ARRAY_SIZE(led_6_groups) }, | |
366 | { "led_7", led_7_groups, ARRAY_SIZE(led_7_groups) }, | |
367 | { "led_8", led_8_groups, ARRAY_SIZE(led_8_groups) }, | |
368 | { "led_9", led_9_groups, ARRAY_SIZE(led_9_groups) }, | |
369 | { "led_10", led_10_groups, ARRAY_SIZE(led_10_groups) }, | |
370 | { "led_11", led_11_groups, ARRAY_SIZE(led_11_groups) }, | |
371 | { "led_12", led_12_groups, ARRAY_SIZE(led_12_groups) }, | |
372 | { "led_13", led_13_groups, ARRAY_SIZE(led_13_groups) }, | |
373 | { "led_14", led_14_groups, ARRAY_SIZE(led_14_groups) }, | |
374 | { "led_15", led_15_groups, ARRAY_SIZE(led_15_groups) }, | |
375 | { "led_16", led_16_groups, ARRAY_SIZE(led_16_groups) }, | |
376 | { "led_17", led_17_groups, ARRAY_SIZE(led_17_groups) }, | |
377 | { "led_18", led_18_groups, ARRAY_SIZE(led_18_groups) }, | |
378 | { "led_19", led_19_groups, ARRAY_SIZE(led_19_groups) }, | |
379 | { "led_20", led_20_groups, ARRAY_SIZE(led_20_groups) }, | |
380 | { "led_21", led_21_groups, ARRAY_SIZE(led_21_groups) }, | |
381 | { "led_22", led_22_groups, ARRAY_SIZE(led_22_groups) }, | |
382 | { "led_23", led_23_groups, ARRAY_SIZE(led_23_groups) }, | |
383 | { "led_24", led_24_groups, ARRAY_SIZE(led_24_groups) }, | |
384 | { "led_25", led_25_groups, ARRAY_SIZE(led_25_groups) }, | |
385 | { "led_26", led_26_groups, ARRAY_SIZE(led_26_groups) }, | |
386 | { "led_27", led_27_groups, ARRAY_SIZE(led_27_groups) }, | |
387 | { "led_28", led_28_groups, ARRAY_SIZE(led_28_groups) }, | |
388 | { "led_29", led_29_groups, ARRAY_SIZE(led_29_groups) }, | |
389 | { "led_30", led_30_groups, ARRAY_SIZE(led_30_groups) }, | |
390 | { "led_31", led_31_groups, ARRAY_SIZE(led_31_groups) }, | |
391 | { "hs_uart", hs_uart_groups, ARRAY_SIZE(hs_uart_groups) }, | |
392 | { "i2c", i2c_groups, ARRAY_SIZE(i2c_groups) }, | |
393 | { "i2s", i2s_groups, ARRAY_SIZE(i2s_groups) }, | |
394 | { "nand_ctrl", nand_ctrl_groups, ARRAY_SIZE(nand_ctrl_groups) }, | |
395 | { "nand_data", nand_data_groups, ARRAY_SIZE(nand_data_groups) }, | |
396 | { "emmc_ctrl", emmc_ctrl_groups, ARRAY_SIZE(emmc_ctrl_groups) }, | |
397 | { "usb0_pwr", usb0_pwr_groups, ARRAY_SIZE(usb0_pwr_groups) }, | |
398 | { "usb1_pwr", usb1_pwr_groups, ARRAY_SIZE(usb1_pwr_groups) }, | |
399 | }; | |
400 | ||
401 | /* | |
402 | * Groups code | |
403 | */ | |
404 | ||
405 | static const struct pinctrl_ops bcm4908_pinctrl_ops = { | |
406 | .get_groups_count = pinctrl_generic_get_group_count, | |
407 | .get_group_name = pinctrl_generic_get_group_name, | |
408 | .get_group_pins = pinctrl_generic_get_group_pins, | |
409 | .dt_node_to_map = pinconf_generic_dt_node_to_map_group, | |
410 | .dt_free_map = pinconf_generic_dt_free_map, | |
411 | }; | |
412 | ||
413 | /* | |
414 | * Functions code | |
415 | */ | |
416 | ||
417 | static int bcm4908_pinctrl_set_mux(struct pinctrl_dev *pctrl_dev, | |
418 | unsigned int func_selector, | |
419 | unsigned int group_selector) | |
420 | { | |
421 | struct bcm4908_pinctrl *bcm4908_pinctrl = pinctrl_dev_get_drvdata(pctrl_dev); | |
422 | const struct bcm4908_pinctrl_grp *group; | |
423 | struct group_desc *group_desc; | |
424 | int i; | |
425 | ||
426 | group_desc = pinctrl_generic_get_group(pctrl_dev, group_selector); | |
427 | if (!group_desc) | |
428 | return -EINVAL; | |
429 | group = group_desc->data; | |
430 | ||
431 | mutex_lock(&bcm4908_pinctrl->mutex); | |
432 | for (i = 0; i < group->num_pins; i++) { | |
433 | u32 lsb = 0; | |
434 | ||
435 | lsb |= group->pins[i].number; | |
436 | lsb |= group->pins[i].function << BCM4908_TEST_PORT_LSB_PINMUX_DATA_SHIFT; | |
437 | ||
438 | writel(0x0, bcm4908_pinctrl->base + BCM4908_TEST_PORT_BLOCK_DATA_MSB); | |
439 | writel(lsb, bcm4908_pinctrl->base + BCM4908_TEST_PORT_BLOCK_DATA_LSB); | |
440 | writel(BCM4908_TEST_PORT_CMD_LOAD_MUX_REG, | |
441 | bcm4908_pinctrl->base + BCM4908_TEST_PORT_COMMAND); | |
442 | } | |
443 | mutex_unlock(&bcm4908_pinctrl->mutex); | |
444 | ||
445 | return 0; | |
446 | } | |
447 | ||
448 | static const struct pinmux_ops bcm4908_pinctrl_pmxops = { | |
449 | .get_functions_count = pinmux_generic_get_function_count, | |
450 | .get_function_name = pinmux_generic_get_function_name, | |
451 | .get_function_groups = pinmux_generic_get_function_groups, | |
452 | .set_mux = bcm4908_pinctrl_set_mux, | |
453 | }; | |
454 | ||
455 | /* | |
456 | * Controller code | |
457 | */ | |
458 | ||
459 | static struct pinctrl_desc bcm4908_pinctrl_desc = { | |
460 | .name = "bcm4908-pinctrl", | |
461 | .pctlops = &bcm4908_pinctrl_ops, | |
462 | .pmxops = &bcm4908_pinctrl_pmxops, | |
463 | }; | |
464 | ||
465 | static const struct of_device_id bcm4908_pinctrl_of_match_table[] = { | |
466 | { .compatible = "brcm,bcm4908-pinctrl", }, | |
467 | { } | |
468 | }; | |
469 | ||
470 | static int bcm4908_pinctrl_probe(struct platform_device *pdev) | |
471 | { | |
472 | struct device *dev = &pdev->dev; | |
473 | struct bcm4908_pinctrl *bcm4908_pinctrl; | |
474 | struct pinctrl_desc *pctldesc; | |
475 | struct pinctrl_pin_desc *pins; | |
476 | char **pin_names; | |
477 | int i; | |
478 | ||
479 | bcm4908_pinctrl = devm_kzalloc(dev, sizeof(*bcm4908_pinctrl), GFP_KERNEL); | |
480 | if (!bcm4908_pinctrl) | |
481 | return -ENOMEM; | |
482 | pctldesc = &bcm4908_pinctrl->pctldesc; | |
483 | platform_set_drvdata(pdev, bcm4908_pinctrl); | |
484 | ||
485 | /* Set basic properties */ | |
486 | ||
487 | bcm4908_pinctrl->dev = dev; | |
488 | ||
489 | bcm4908_pinctrl->base = devm_platform_ioremap_resource(pdev, 0); | |
490 | if (IS_ERR(bcm4908_pinctrl->base)) | |
491 | return PTR_ERR(bcm4908_pinctrl->base); | |
492 | ||
493 | mutex_init(&bcm4908_pinctrl->mutex); | |
494 | ||
495 | memcpy(pctldesc, &bcm4908_pinctrl_desc, sizeof(*pctldesc)); | |
496 | ||
497 | /* Set pinctrl properties */ | |
498 | ||
499 | pin_names = devm_kasprintf_strarray(dev, "pin", BCM4908_NUM_PINS); | |
500 | if (IS_ERR(pin_names)) | |
501 | return PTR_ERR(pin_names); | |
502 | ||
503 | pins = devm_kcalloc(dev, BCM4908_NUM_PINS, sizeof(*pins), GFP_KERNEL); | |
504 | if (!pins) | |
505 | return -ENOMEM; | |
506 | for (i = 0; i < BCM4908_NUM_PINS; i++) { | |
507 | pins[i].number = i; | |
508 | pins[i].name = pin_names[i]; | |
509 | } | |
510 | pctldesc->pins = pins; | |
511 | pctldesc->npins = BCM4908_NUM_PINS; | |
512 | ||
513 | /* Register */ | |
514 | ||
515 | bcm4908_pinctrl->pctldev = devm_pinctrl_register(dev, pctldesc, bcm4908_pinctrl); | |
516 | if (IS_ERR(bcm4908_pinctrl->pctldev)) | |
517 | return dev_err_probe(dev, PTR_ERR(bcm4908_pinctrl->pctldev), | |
518 | "Failed to register pinctrl\n"); | |
519 | ||
520 | /* Groups */ | |
521 | ||
522 | for (i = 0; i < ARRAY_SIZE(bcm4908_pinctrl_grps); i++) { | |
523 | const struct bcm4908_pinctrl_grp *group = &bcm4908_pinctrl_grps[i]; | |
524 | int *pins; | |
525 | int j; | |
526 | ||
527 | pins = devm_kcalloc(dev, group->num_pins, sizeof(*pins), GFP_KERNEL); | |
528 | if (!pins) | |
529 | return -ENOMEM; | |
530 | for (j = 0; j < group->num_pins; j++) | |
531 | pins[j] = group->pins[j].number; | |
532 | ||
533 | pinctrl_generic_add_group(bcm4908_pinctrl->pctldev, group->name, | |
534 | pins, group->num_pins, (void *)group); | |
535 | } | |
536 | ||
537 | /* Functions */ | |
538 | ||
539 | for (i = 0; i < ARRAY_SIZE(bcm4908_pinctrl_functions); i++) { | |
540 | const struct bcm4908_pinctrl_function *function = &bcm4908_pinctrl_functions[i]; | |
541 | ||
542 | pinmux_generic_add_function(bcm4908_pinctrl->pctldev, | |
543 | function->name, | |
544 | function->groups, | |
545 | function->num_groups, NULL); | |
546 | } | |
547 | ||
548 | return 0; | |
549 | } | |
550 | ||
551 | static struct platform_driver bcm4908_pinctrl_driver = { | |
552 | .probe = bcm4908_pinctrl_probe, | |
553 | .driver = { | |
554 | .name = "bcm4908-pinctrl", | |
555 | .of_match_table = bcm4908_pinctrl_of_match_table, | |
556 | }, | |
557 | }; | |
558 | ||
559 | module_platform_driver(bcm4908_pinctrl_driver); | |
560 | ||
561 | MODULE_AUTHOR("Rafał Miłecki"); | |
562 | MODULE_LICENSE("GPL v2"); | |
563 | MODULE_DEVICE_TABLE(of, bcm4908_pinctrl_of_match_table); |