1 // SPDX-License-Identifier: GPL-2.0-only
2 // Copyright (C) 2014-2017 Broadcom
3
4 /*
5 * Broadcom Cygnus IOMUX driver
6 *
7 * This file contains the Cygnus IOMUX driver that supports group based PINMUX
8 * configuration. Although PINMUX configuration is mainly group based, the
9 * Cygnus IOMUX controller allows certain pins to be individually muxed to GPIO
10 * function, and therefore be controlled by the Cygnus ASIU GPIO controller
11 */
12
13 #include <linux/err.h>
14 #include <linux/io.h>
15 #include <linux/of.h>
16 #include <linux/platform_device.h>
17 #include <linux/seq_file.h>
18 #include <linux/slab.h>
19
20 #include <linux/pinctrl/pinconf-generic.h>
21 #include <linux/pinctrl/pinconf.h>
22 #include <linux/pinctrl/pinctrl.h>
23 #include <linux/pinctrl/pinmux.h>
24
25 #include "../core.h"
26 #include "../pinctrl-utils.h"
27
28 #define CYGNUS_NUM_IOMUX_REGS 8
29 #define CYGNUS_NUM_MUX_PER_REG 8
30 #define CYGNUS_NUM_IOMUX (CYGNUS_NUM_IOMUX_REGS * \
31 CYGNUS_NUM_MUX_PER_REG)
32
33 /*
34 * Cygnus IOMUX register description
35 *
36 * @offset: register offset for mux configuration of a group
37 * @shift: bit shift for mux configuration of a group
38 * @alt: alternate function to set to
39 */
40 struct cygnus_mux {
41 unsigned int offset;
42 unsigned int shift;
43 unsigned int alt;
44 };
45
46 /*
47 * Keep track of Cygnus IOMUX configuration and prevent double configuration
48 *
49 * @cygnus_mux: Cygnus IOMUX register description
50 * @is_configured: flag to indicate whether a mux setting has already been
51 * configured
52 */
53 struct cygnus_mux_log {
54 struct cygnus_mux mux;
55 bool is_configured;
56 };
57
58 /*
59 * Group based IOMUX configuration
60 *
61 * @name: name of the group
62 * @pins: array of pins used by this group
63 * @num_pins: total number of pins used by this group
64 * @mux: Cygnus group based IOMUX configuration
65 */
66 struct cygnus_pin_group {
67 const char *name;
68 const unsigned *pins;
69 unsigned num_pins;
70 struct cygnus_mux mux;
71 };
72
73 /*
74 * Cygnus mux function and supported pin groups
75 *
76 * @name: name of the function
77 * @groups: array of groups that can be supported by this function
78 * @num_groups: total number of groups that can be supported by this function
79 */
80 struct cygnus_pin_function {
81 const char *name;
82 const char * const *groups;
83 unsigned num_groups;
84 };
85
86 /*
87 * Cygnus IOMUX pinctrl core
88 *
89 * @pctl: pointer to pinctrl_dev
90 * @dev: pointer to device
91 * @base0: first I/O register base of the Cygnus IOMUX controller
92 * @base1: second I/O register base
93 * @groups: pointer to array of groups
94 * @num_groups: total number of groups
95 * @functions: pointer to array of functions
96 * @num_functions: total number of functions
97 * @mux_log: pointer to the array of mux logs
98 * @lock: lock to protect register access
99 */
100 struct cygnus_pinctrl {
101 struct pinctrl_dev *pctl;
102 struct device *dev;
103 void __iomem *base0;
104 void __iomem *base1;
105
106 const struct cygnus_pin_group *groups;
107 unsigned num_groups;
108
109 const struct cygnus_pin_function *functions;
110 unsigned num_functions;
111
112 struct cygnus_mux_log *mux_log;
113
114 spinlock_t lock;
115 };
116
117 /*
118 * Certain pins can be individually muxed to GPIO function
119 *
120 * @is_supported: flag to indicate GPIO mux is supported for this pin
121 * @offset: register offset for GPIO mux override of a pin
122 * @shift: bit shift for GPIO mux override of a pin
123 */
124 struct cygnus_gpio_mux {
125 int is_supported;
126 unsigned int offset;
127 unsigned int shift;
128 };
129
130 /*
131 * Description of a pin in Cygnus
132 *
133 * @pin: pin number
134 * @name: pin name
135 * @gpio_mux: GPIO override related information
136 */
137 struct cygnus_pin {
138 unsigned pin;
139 char *name;
140 struct cygnus_gpio_mux gpio_mux;
141 };
142
143 #define CYGNUS_PIN_DESC(p, n, i, o, s) \
144 { \
145 .pin = p, \
146 .name = n, \
147 .gpio_mux = { \
148 .is_supported = i, \
149 .offset = o, \
150 .shift = s, \
151 }, \
152 }
153
154 /*
155 * List of pins in Cygnus
156 */
157 static struct cygnus_pin cygnus_pins[] = {
158 CYGNUS_PIN_DESC(0, "ext_device_reset_n", 0, 0, 0),
159 CYGNUS_PIN_DESC(1, "chip_mode0", 0, 0, 0),
160 CYGNUS_PIN_DESC(2, "chip_mode1", 0, 0, 0),
161 CYGNUS_PIN_DESC(3, "chip_mode2", 0, 0, 0),
162 CYGNUS_PIN_DESC(4, "chip_mode3", 0, 0, 0),
163 CYGNUS_PIN_DESC(5, "chip_mode4", 0, 0, 0),
164 CYGNUS_PIN_DESC(6, "bsc0_scl", 0, 0, 0),
165 CYGNUS_PIN_DESC(7, "bsc0_sda", 0, 0, 0),
166 CYGNUS_PIN_DESC(8, "bsc1_scl", 0, 0, 0),
167 CYGNUS_PIN_DESC(9, "bsc1_sda", 0, 0, 0),
168 CYGNUS_PIN_DESC(10, "d1w_dq", 1, 0x28, 0),
169 CYGNUS_PIN_DESC(11, "d1wowstz_l", 1, 0x4, 28),
170 CYGNUS_PIN_DESC(12, "gpio0", 0, 0, 0),
171 CYGNUS_PIN_DESC(13, "gpio1", 0, 0, 0),
172 CYGNUS_PIN_DESC(14, "gpio2", 0, 0, 0),
173 CYGNUS_PIN_DESC(15, "gpio3", 0, 0, 0),
174 CYGNUS_PIN_DESC(16, "gpio4", 0, 0, 0),
175 CYGNUS_PIN_DESC(17, "gpio5", 0, 0, 0),
176 CYGNUS_PIN_DESC(18, "gpio6", 0, 0, 0),
177 CYGNUS_PIN_DESC(19, "gpio7", 0, 0, 0),
178 CYGNUS_PIN_DESC(20, "gpio8", 0, 0, 0),
179 CYGNUS_PIN_DESC(21, "gpio9", 0, 0, 0),
180 CYGNUS_PIN_DESC(22, "gpio10", 0, 0, 0),
181 CYGNUS_PIN_DESC(23, "gpio11", 0, 0, 0),
182 CYGNUS_PIN_DESC(24, "gpio12", 0, 0, 0),
183 CYGNUS_PIN_DESC(25, "gpio13", 0, 0, 0),
184 CYGNUS_PIN_DESC(26, "gpio14", 0, 0, 0),
185 CYGNUS_PIN_DESC(27, "gpio15", 0, 0, 0),
186 CYGNUS_PIN_DESC(28, "gpio16", 0, 0, 0),
187 CYGNUS_PIN_DESC(29, "gpio17", 0, 0, 0),
188 CYGNUS_PIN_DESC(30, "gpio18", 0, 0, 0),
189 CYGNUS_PIN_DESC(31, "gpio19", 0, 0, 0),
190 CYGNUS_PIN_DESC(32, "gpio20", 0, 0, 0),
191 CYGNUS_PIN_DESC(33, "gpio21", 0, 0, 0),
192 CYGNUS_PIN_DESC(34, "gpio22", 0, 0, 0),
193 CYGNUS_PIN_DESC(35, "gpio23", 0, 0, 0),
194 CYGNUS_PIN_DESC(36, "mdc", 0, 0, 0),
195 CYGNUS_PIN_DESC(37, "mdio", 0, 0, 0),
196 CYGNUS_PIN_DESC(38, "pwm0", 1, 0x10, 30),
197 CYGNUS_PIN_DESC(39, "pwm1", 1, 0x10, 28),
198 CYGNUS_PIN_DESC(40, "pwm2", 1, 0x10, 26),
199 CYGNUS_PIN_DESC(41, "pwm3", 1, 0x10, 24),
200 CYGNUS_PIN_DESC(42, "sc0_clk", 1, 0x10, 22),
201 CYGNUS_PIN_DESC(43, "sc0_cmdvcc_l", 1, 0x10, 20),
202 CYGNUS_PIN_DESC(44, "sc0_detect", 1, 0x10, 18),
203 CYGNUS_PIN_DESC(45, "sc0_fcb", 1, 0x10, 16),
204 CYGNUS_PIN_DESC(46, "sc0_io", 1, 0x10, 14),
205 CYGNUS_PIN_DESC(47, "sc0_rst_l", 1, 0x10, 12),
206 CYGNUS_PIN_DESC(48, "sc1_clk", 1, 0x10, 10),
207 CYGNUS_PIN_DESC(49, "sc1_cmdvcc_l", 1, 0x10, 8),
208 CYGNUS_PIN_DESC(50, "sc1_detect", 1, 0x10, 6),
209 CYGNUS_PIN_DESC(51, "sc1_fcb", 1, 0x10, 4),
210 CYGNUS_PIN_DESC(52, "sc1_io", 1, 0x10, 2),
211 CYGNUS_PIN_DESC(53, "sc1_rst_l", 1, 0x10, 0),
212 CYGNUS_PIN_DESC(54, "spi0_clk", 1, 0x18, 10),
213 CYGNUS_PIN_DESC(55, "spi0_mosi", 1, 0x18, 6),
214 CYGNUS_PIN_DESC(56, "spi0_miso", 1, 0x18, 8),
215 CYGNUS_PIN_DESC(57, "spi0_ss", 1, 0x18, 4),
216 CYGNUS_PIN_DESC(58, "spi1_clk", 1, 0x18, 2),
217 CYGNUS_PIN_DESC(59, "spi1_mosi", 1, 0x1c, 30),
218 CYGNUS_PIN_DESC(60, "spi1_miso", 1, 0x18, 0),
219 CYGNUS_PIN_DESC(61, "spi1_ss", 1, 0x1c, 28),
220 CYGNUS_PIN_DESC(62, "spi2_clk", 1, 0x1c, 26),
221 CYGNUS_PIN_DESC(63, "spi2_mosi", 1, 0x1c, 22),
222 CYGNUS_PIN_DESC(64, "spi2_miso", 1, 0x1c, 24),
223 CYGNUS_PIN_DESC(65, "spi2_ss", 1, 0x1c, 20),
224 CYGNUS_PIN_DESC(66, "spi3_clk", 1, 0x1c, 18),
225 CYGNUS_PIN_DESC(67, "spi3_mosi", 1, 0x1c, 14),
226 CYGNUS_PIN_DESC(68, "spi3_miso", 1, 0x1c, 16),
227 CYGNUS_PIN_DESC(69, "spi3_ss", 1, 0x1c, 12),
228 CYGNUS_PIN_DESC(70, "uart0_cts", 1, 0x1c, 10),
229 CYGNUS_PIN_DESC(71, "uart0_rts", 1, 0x1c, 8),
230 CYGNUS_PIN_DESC(72, "uart0_rx", 1, 0x1c, 6),
231 CYGNUS_PIN_DESC(73, "uart0_tx", 1, 0x1c, 4),
232 CYGNUS_PIN_DESC(74, "uart1_cts", 1, 0x1c, 2),
233 CYGNUS_PIN_DESC(75, "uart1_dcd", 1, 0x1c, 0),
234 CYGNUS_PIN_DESC(76, "uart1_dsr", 1, 0x20, 14),
235 CYGNUS_PIN_DESC(77, "uart1_dtr", 1, 0x20, 12),
236 CYGNUS_PIN_DESC(78, "uart1_ri", 1, 0x20, 10),
237 CYGNUS_PIN_DESC(79, "uart1_rts", 1, 0x20, 8),
238 CYGNUS_PIN_DESC(80, "uart1_rx", 1, 0x20, 6),
239 CYGNUS_PIN_DESC(81, "uart1_tx", 1, 0x20, 4),
240 CYGNUS_PIN_DESC(82, "uart3_rx", 1, 0x20, 2),
241 CYGNUS_PIN_DESC(83, "uart3_tx", 1, 0x20, 0),
242 CYGNUS_PIN_DESC(84, "sdio1_clk_sdcard", 1, 0x14, 6),
243 CYGNUS_PIN_DESC(85, "sdio1_cmd", 1, 0x14, 4),
244 CYGNUS_PIN_DESC(86, "sdio1_data0", 1, 0x14, 2),
245 CYGNUS_PIN_DESC(87, "sdio1_data1", 1, 0x14, 0),
246 CYGNUS_PIN_DESC(88, "sdio1_data2", 1, 0x18, 30),
247 CYGNUS_PIN_DESC(89, "sdio1_data3", 1, 0x18, 28),
248 CYGNUS_PIN_DESC(90, "sdio1_wp_n", 1, 0x18, 24),
249 CYGNUS_PIN_DESC(91, "sdio1_card_rst", 1, 0x14, 10),
250 CYGNUS_PIN_DESC(92, "sdio1_led_on", 1, 0x18, 26),
251 CYGNUS_PIN_DESC(93, "sdio1_cd", 1, 0x14, 8),
252 CYGNUS_PIN_DESC(94, "sdio0_clk_sdcard", 1, 0x14, 26),
253 CYGNUS_PIN_DESC(95, "sdio0_cmd", 1, 0x14, 24),
254 CYGNUS_PIN_DESC(96, "sdio0_data0", 1, 0x14, 22),
255 CYGNUS_PIN_DESC(97, "sdio0_data1", 1, 0x14, 20),
256 CYGNUS_PIN_DESC(98, "sdio0_data2", 1, 0x14, 18),
257 CYGNUS_PIN_DESC(99, "sdio0_data3", 1, 0x14, 16),
258 CYGNUS_PIN_DESC(100, "sdio0_wp_n", 1, 0x14, 12),
259 CYGNUS_PIN_DESC(101, "sdio0_card_rst", 1, 0x14, 30),
260 CYGNUS_PIN_DESC(102, "sdio0_led_on", 1, 0x14, 14),
261 CYGNUS_PIN_DESC(103, "sdio0_cd", 1, 0x14, 28),
262 CYGNUS_PIN_DESC(104, "sflash_clk", 1, 0x18, 22),
263 CYGNUS_PIN_DESC(105, "sflash_cs_l", 1, 0x18, 20),
264 CYGNUS_PIN_DESC(106, "sflash_mosi", 1, 0x18, 14),
265 CYGNUS_PIN_DESC(107, "sflash_miso", 1, 0x18, 16),
266 CYGNUS_PIN_DESC(108, "sflash_wp_n", 1, 0x18, 12),
267 CYGNUS_PIN_DESC(109, "sflash_hold_n", 1, 0x18, 18),
268 CYGNUS_PIN_DESC(110, "nand_ale", 1, 0xc, 30),
269 CYGNUS_PIN_DESC(111, "nand_ce0_l", 1, 0xc, 28),
270 CYGNUS_PIN_DESC(112, "nand_ce1_l", 1, 0xc, 26),
271 CYGNUS_PIN_DESC(113, "nand_cle", 1, 0xc, 24),
272 CYGNUS_PIN_DESC(114, "nand_dq0", 1, 0xc, 22),
273 CYGNUS_PIN_DESC(115, "nand_dq1", 1, 0xc, 20),
274 CYGNUS_PIN_DESC(116, "nand_dq2", 1, 0xc, 18),
275 CYGNUS_PIN_DESC(117, "nand_dq3", 1, 0xc, 16),
276 CYGNUS_PIN_DESC(118, "nand_dq4", 1, 0xc, 14),
277 CYGNUS_PIN_DESC(119, "nand_dq5", 1, 0xc, 12),
278 CYGNUS_PIN_DESC(120, "nand_dq6", 1, 0xc, 10),
279 CYGNUS_PIN_DESC(121, "nand_dq7", 1, 0xc, 8),
280 CYGNUS_PIN_DESC(122, "nand_rb_l", 1, 0xc, 6),
281 CYGNUS_PIN_DESC(123, "nand_re_l", 1, 0xc, 4),
282 CYGNUS_PIN_DESC(124, "nand_we_l", 1, 0xc, 2),
283 CYGNUS_PIN_DESC(125, "nand_wp_l", 1, 0xc, 0),
284 CYGNUS_PIN_DESC(126, "lcd_clac", 1, 0x4, 26),
285 CYGNUS_PIN_DESC(127, "lcd_clcp", 1, 0x4, 24),
286 CYGNUS_PIN_DESC(128, "lcd_cld0", 1, 0x4, 22),
287 CYGNUS_PIN_DESC(129, "lcd_cld1", 1, 0x4, 0),
288 CYGNUS_PIN_DESC(130, "lcd_cld10", 1, 0x4, 20),
289 CYGNUS_PIN_DESC(131, "lcd_cld11", 1, 0x4, 18),
290 CYGNUS_PIN_DESC(132, "lcd_cld12", 1, 0x4, 16),
291 CYGNUS_PIN_DESC(133, "lcd_cld13", 1, 0x4, 14),
292 CYGNUS_PIN_DESC(134, "lcd_cld14", 1, 0x4, 12),
293 CYGNUS_PIN_DESC(135, "lcd_cld15", 1, 0x4, 10),
294 CYGNUS_PIN_DESC(136, "lcd_cld16", 1, 0x4, 8),
295 CYGNUS_PIN_DESC(137, "lcd_cld17", 1, 0x4, 6),
296 CYGNUS_PIN_DESC(138, "lcd_cld18", 1, 0x4, 4),
297 CYGNUS_PIN_DESC(139, "lcd_cld19", 1, 0x4, 2),
298 CYGNUS_PIN_DESC(140, "lcd_cld2", 1, 0x8, 22),
299 CYGNUS_PIN_DESC(141, "lcd_cld20", 1, 0x8, 30),
300 CYGNUS_PIN_DESC(142, "lcd_cld21", 1, 0x8, 28),
301 CYGNUS_PIN_DESC(143, "lcd_cld22", 1, 0x8, 26),
302 CYGNUS_PIN_DESC(144, "lcd_cld23", 1, 0x8, 24),
303 CYGNUS_PIN_DESC(145, "lcd_cld3", 1, 0x8, 20),
304 CYGNUS_PIN_DESC(146, "lcd_cld4", 1, 0x8, 18),
305 CYGNUS_PIN_DESC(147, "lcd_cld5", 1, 0x8, 16),
306 CYGNUS_PIN_DESC(148, "lcd_cld6", 1, 0x8, 14),
307 CYGNUS_PIN_DESC(149, "lcd_cld7", 1, 0x8, 12),
308 CYGNUS_PIN_DESC(150, "lcd_cld8", 1, 0x8, 10),
309 CYGNUS_PIN_DESC(151, "lcd_cld9", 1, 0x8, 8),
310 CYGNUS_PIN_DESC(152, "lcd_clfp", 1, 0x8, 6),
311 CYGNUS_PIN_DESC(153, "lcd_clle", 1, 0x8, 4),
312 CYGNUS_PIN_DESC(154, "lcd_cllp", 1, 0x8, 2),
313 CYGNUS_PIN_DESC(155, "lcd_clpower", 1, 0x8, 0),
314 CYGNUS_PIN_DESC(156, "camera_vsync", 1, 0x4, 30),
315 CYGNUS_PIN_DESC(157, "camera_trigger", 1, 0x0, 0),
316 CYGNUS_PIN_DESC(158, "camera_strobe", 1, 0x0, 2),
317 CYGNUS_PIN_DESC(159, "camera_standby", 1, 0x0, 4),
318 CYGNUS_PIN_DESC(160, "camera_reset_n", 1, 0x0, 6),
319 CYGNUS_PIN_DESC(161, "camera_pixdata9", 1, 0x0, 8),
320 CYGNUS_PIN_DESC(162, "camera_pixdata8", 1, 0x0, 10),
321 CYGNUS_PIN_DESC(163, "camera_pixdata7", 1, 0x0, 12),
322 CYGNUS_PIN_DESC(164, "camera_pixdata6", 1, 0x0, 14),
323 CYGNUS_PIN_DESC(165, "camera_pixdata5", 1, 0x0, 16),
324 CYGNUS_PIN_DESC(166, "camera_pixdata4", 1, 0x0, 18),
325 CYGNUS_PIN_DESC(167, "camera_pixdata3", 1, 0x0, 20),
326 CYGNUS_PIN_DESC(168, "camera_pixdata2", 1, 0x0, 22),
327 CYGNUS_PIN_DESC(169, "camera_pixdata1", 1, 0x0, 24),
328 CYGNUS_PIN_DESC(170, "camera_pixdata0", 1, 0x0, 26),
329 CYGNUS_PIN_DESC(171, "camera_pixclk", 1, 0x0, 28),
330 CYGNUS_PIN_DESC(172, "camera_hsync", 1, 0x0, 30),
331 CYGNUS_PIN_DESC(173, "camera_pll_ref_clk", 0, 0, 0),
332 CYGNUS_PIN_DESC(174, "usb_id_indication", 0, 0, 0),
333 CYGNUS_PIN_DESC(175, "usb_vbus_indication", 0, 0, 0),
334 CYGNUS_PIN_DESC(176, "gpio0_3p3", 0, 0, 0),
335 CYGNUS_PIN_DESC(177, "gpio1_3p3", 0, 0, 0),
336 CYGNUS_PIN_DESC(178, "gpio2_3p3", 0, 0, 0),
337 CYGNUS_PIN_DESC(179, "gpio3_3p3", 0, 0, 0),
338 };
339
340 /*
341 * List of groups of pins
342 */
343 static const unsigned bsc1_pins[] = { 8, 9 };
344 static const unsigned pcie_clkreq_pins[] = { 8, 9 };
345
346 static const unsigned i2s2_0_pins[] = { 12 };
347 static const unsigned i2s2_1_pins[] = { 13 };
348 static const unsigned i2s2_2_pins[] = { 14 };
349 static const unsigned i2s2_3_pins[] = { 15 };
350 static const unsigned i2s2_4_pins[] = { 16 };
351
352 static const unsigned pwm4_pins[] = { 17 };
353 static const unsigned pwm5_pins[] = { 18 };
354
355 static const unsigned key0_pins[] = { 20 };
356 static const unsigned key1_pins[] = { 21 };
357 static const unsigned key2_pins[] = { 22 };
358 static const unsigned key3_pins[] = { 23 };
359 static const unsigned key4_pins[] = { 24 };
360 static const unsigned key5_pins[] = { 25 };
361
362 static const unsigned key6_pins[] = { 26 };
363 static const unsigned audio_dte0_pins[] = { 26 };
364
365 static const unsigned key7_pins[] = { 27 };
366 static const unsigned audio_dte1_pins[] = { 27 };
367
368 static const unsigned key8_pins[] = { 28 };
369 static const unsigned key9_pins[] = { 29 };
370 static const unsigned key10_pins[] = { 30 };
371 static const unsigned key11_pins[] = { 31 };
372 static const unsigned key12_pins[] = { 32 };
373 static const unsigned key13_pins[] = { 33 };
374
375 static const unsigned key14_pins[] = { 34 };
376 static const unsigned audio_dte2_pins[] = { 34 };
377
378 static const unsigned key15_pins[] = { 35 };
379 static const unsigned audio_dte3_pins[] = { 35 };
380
381 static const unsigned pwm0_pins[] = { 38 };
382 static const unsigned pwm1_pins[] = { 39 };
383 static const unsigned pwm2_pins[] = { 40 };
384 static const unsigned pwm3_pins[] = { 41 };
385
386 static const unsigned sdio0_pins[] = { 94, 95, 96, 97, 98, 99 };
387
388 static const unsigned smart_card0_pins[] = { 42, 43, 44, 46, 47 };
389 static const unsigned i2s0_0_pins[] = { 42, 43, 44, 46 };
390 static const unsigned spdif_pins[] = { 47 };
391
392 static const unsigned smart_card1_pins[] = { 48, 49, 50, 52, 53 };
393 static const unsigned i2s1_0_pins[] = { 48, 49, 50, 52 };
394
395 static const unsigned spi0_pins[] = { 54, 55, 56, 57 };
396
397 static const unsigned spi1_pins[] = { 58, 59, 60, 61 };
398
399 static const unsigned spi2_pins[] = { 62, 63, 64, 65 };
400
401 static const unsigned spi3_pins[] = { 66, 67, 68, 69 };
402 static const unsigned sw_led0_0_pins[] = { 66, 67, 68, 69 };
403
404 static const unsigned d1w_pins[] = { 10, 11 };
405 static const unsigned uart4_pins[] = { 10, 11 };
406 static const unsigned sw_led2_0_pins[] = { 10, 11 };
407
408 static const unsigned lcd_pins[] = { 126, 127, 128, 129, 130, 131, 132, 133,
409 134, 135, 136, 137, 138, 139, 140, 141, 142, 143, 144, 145, 146, 147,
410 148, 149, 150, 151, 152, 153, 154, 155 };
411 static const unsigned sram_0_pins[] = { 126, 127, 128, 129, 130, 131, 132, 133,
412 134, 135, 136, 137, 138, 139, 140, 141, 142, 143, 144, 145, 146, 147,
413 148, 149, 150, 151, 152, 153, 154, 155 };
414 static const unsigned spi5_pins[] = { 141, 142, 143, 144 };
415
416 static const unsigned uart0_pins[] = { 70, 71, 72, 73 };
417 static const unsigned sw_led0_1_pins[] = { 70, 71, 72, 73 };
418
419 static const unsigned uart1_dte_pins[] = { 75, 76, 77, 78 };
420 static const unsigned uart2_pins[] = { 75, 76, 77, 78 };
421
422 static const unsigned uart1_pins[] = { 74, 79, 80, 81 };
423
424 static const unsigned uart3_pins[] = { 82, 83 };
425
426 static const unsigned qspi_0_pins[] = { 104, 105, 106, 107 };
427
428 static const unsigned nand_pins[] = { 110, 111, 112, 113, 114, 115, 116, 117,
429 118, 119, 120, 121, 122, 123, 124, 125 };
430
431 static const unsigned sdio0_cd_pins[] = { 103 };
432
433 static const unsigned sdio0_mmc_pins[] = { 100, 101, 102 };
434
435 static const unsigned sdio1_data_0_pins[] = { 86, 87 };
436 static const unsigned can0_pins[] = { 86, 87 };
437 static const unsigned spi4_0_pins[] = { 86, 87 };
438
439 static const unsigned sdio1_data_1_pins[] = { 88, 89 };
440 static const unsigned can1_pins[] = { 88, 89 };
441 static const unsigned spi4_1_pins[] = { 88, 89 };
442
443 static const unsigned sdio1_cd_pins[] = { 93 };
444
445 static const unsigned sdio1_led_pins[] = { 84, 85 };
446 static const unsigned sw_led2_1_pins[] = { 84, 85 };
447
448 static const unsigned sdio1_mmc_pins[] = { 90, 91, 92 };
449
450 static const unsigned cam_led_pins[] = { 156, 157, 158, 159, 160 };
451 static const unsigned sw_led1_pins[] = { 156, 157, 158, 159 };
452
453 static const unsigned cam_0_pins[] = { 169, 170, 171, 169, 170 };
454
455 static const unsigned cam_1_pins[] = { 161, 162, 163, 164, 165, 166, 167,
456 168 };
457 static const unsigned sram_1_pins[] = { 161, 162, 163, 164, 165, 166, 167,
458 168 };
459
460 static const unsigned qspi_1_pins[] = { 108, 109 };
461
462 static const unsigned smart_card0_fcb_pins[] = { 45 };
463 static const unsigned i2s0_1_pins[] = { 45 };
464
465 static const unsigned smart_card1_fcb_pins[] = { 51 };
466 static const unsigned i2s1_1_pins[] = { 51 };
467
468 static const unsigned gpio0_3p3_pins[] = { 176 };
469 static const unsigned usb0_oc_pins[] = { 176 };
470
471 static const unsigned gpio1_3p3_pins[] = { 177 };
472 static const unsigned usb1_oc_pins[] = { 177 };
473
474 static const unsigned gpio2_3p3_pins[] = { 178 };
475 static const unsigned usb2_oc_pins[] = { 178 };
476
477 #define CYGNUS_PIN_GROUP(group_name, off, sh, al) \
478 { \
479 .name = __stringify(group_name) "_grp", \
480 .pins = group_name ## _pins, \
481 .num_pins = ARRAY_SIZE(group_name ## _pins), \
482 .mux = { \
483 .offset = off, \
484 .shift = sh, \
485 .alt = al, \
486 } \
487 }
488
489 /*
490 * List of Cygnus pin groups
491 */
492 static const struct cygnus_pin_group cygnus_pin_groups[] = {
493 CYGNUS_PIN_GROUP(i2s2_0, 0x0, 0, 2),
494 CYGNUS_PIN_GROUP(i2s2_1, 0x0, 4, 2),
495 CYGNUS_PIN_GROUP(i2s2_2, 0x0, 8, 2),
496 CYGNUS_PIN_GROUP(i2s2_3, 0x0, 12, 2),
497 CYGNUS_PIN_GROUP(i2s2_4, 0x0, 16, 2),
498 CYGNUS_PIN_GROUP(pwm4, 0x0, 20, 0),
499 CYGNUS_PIN_GROUP(pwm5, 0x0, 24, 2),
500 CYGNUS_PIN_GROUP(key0, 0x4, 0, 1),
501 CYGNUS_PIN_GROUP(key1, 0x4, 4, 1),
502 CYGNUS_PIN_GROUP(key2, 0x4, 8, 1),
503 CYGNUS_PIN_GROUP(key3, 0x4, 12, 1),
504 CYGNUS_PIN_GROUP(key4, 0x4, 16, 1),
505 CYGNUS_PIN_GROUP(key5, 0x4, 20, 1),
506 CYGNUS_PIN_GROUP(key6, 0x4, 24, 1),
507 CYGNUS_PIN_GROUP(audio_dte0, 0x4, 24, 2),
508 CYGNUS_PIN_GROUP(key7, 0x4, 28, 1),
509 CYGNUS_PIN_GROUP(audio_dte1, 0x4, 28, 2),
510 CYGNUS_PIN_GROUP(key8, 0x8, 0, 1),
511 CYGNUS_PIN_GROUP(key9, 0x8, 4, 1),
512 CYGNUS_PIN_GROUP(key10, 0x8, 8, 1),
513 CYGNUS_PIN_GROUP(key11, 0x8, 12, 1),
514 CYGNUS_PIN_GROUP(key12, 0x8, 16, 1),
515 CYGNUS_PIN_GROUP(key13, 0x8, 20, 1),
516 CYGNUS_PIN_GROUP(key14, 0x8, 24, 1),
517 CYGNUS_PIN_GROUP(audio_dte2, 0x8, 24, 2),
518 CYGNUS_PIN_GROUP(key15, 0x8, 28, 1),
519 CYGNUS_PIN_GROUP(audio_dte3, 0x8, 28, 2),
520 CYGNUS_PIN_GROUP(pwm0, 0xc, 0, 0),
521 CYGNUS_PIN_GROUP(pwm1, 0xc, 4, 0),
522 CYGNUS_PIN_GROUP(pwm2, 0xc, 8, 0),
523 CYGNUS_PIN_GROUP(pwm3, 0xc, 12, 0),
524 CYGNUS_PIN_GROUP(sdio0, 0xc, 16, 0),
525 CYGNUS_PIN_GROUP(smart_card0, 0xc, 20, 0),
526 CYGNUS_PIN_GROUP(i2s0_0, 0xc, 20, 1),
527 CYGNUS_PIN_GROUP(spdif, 0xc, 20, 1),
528 CYGNUS_PIN_GROUP(smart_card1, 0xc, 24, 0),
529 CYGNUS_PIN_GROUP(i2s1_0, 0xc, 24, 1),
530 CYGNUS_PIN_GROUP(spi0, 0x10, 0, 0),
531 CYGNUS_PIN_GROUP(spi1, 0x10, 4, 0),
532 CYGNUS_PIN_GROUP(spi2, 0x10, 8, 0),
533 CYGNUS_PIN_GROUP(spi3, 0x10, 12, 0),
534 CYGNUS_PIN_GROUP(sw_led0_0, 0x10, 12, 2),
535 CYGNUS_PIN_GROUP(d1w, 0x10, 16, 0),
536 CYGNUS_PIN_GROUP(uart4, 0x10, 16, 1),
537 CYGNUS_PIN_GROUP(sw_led2_0, 0x10, 16, 2),
538 CYGNUS_PIN_GROUP(lcd, 0x10, 20, 0),
539 CYGNUS_PIN_GROUP(sram_0, 0x10, 20, 1),
540 CYGNUS_PIN_GROUP(spi5, 0x10, 20, 2),
541 CYGNUS_PIN_GROUP(uart0, 0x14, 0, 0),
542 CYGNUS_PIN_GROUP(sw_led0_1, 0x14, 0, 2),
543 CYGNUS_PIN_GROUP(uart1_dte, 0x14, 4, 0),
544 CYGNUS_PIN_GROUP(uart2, 0x14, 4, 1),
545 CYGNUS_PIN_GROUP(uart1, 0x14, 8, 0),
546 CYGNUS_PIN_GROUP(uart3, 0x14, 12, 0),
547 CYGNUS_PIN_GROUP(qspi_0, 0x14, 16, 0),
548 CYGNUS_PIN_GROUP(nand, 0x14, 20, 0),
549 CYGNUS_PIN_GROUP(sdio0_cd, 0x18, 0, 0),
550 CYGNUS_PIN_GROUP(sdio0_mmc, 0x18, 4, 0),
551 CYGNUS_PIN_GROUP(sdio1_data_0, 0x18, 8, 0),
552 CYGNUS_PIN_GROUP(can0, 0x18, 8, 1),
553 CYGNUS_PIN_GROUP(spi4_0, 0x18, 8, 2),
554 CYGNUS_PIN_GROUP(sdio1_data_1, 0x18, 12, 0),
555 CYGNUS_PIN_GROUP(can1, 0x18, 12, 1),
556 CYGNUS_PIN_GROUP(spi4_1, 0x18, 12, 2),
557 CYGNUS_PIN_GROUP(sdio1_cd, 0x18, 16, 0),
558 CYGNUS_PIN_GROUP(sdio1_led, 0x18, 20, 0),
559 CYGNUS_PIN_GROUP(sw_led2_1, 0x18, 20, 2),
560 CYGNUS_PIN_GROUP(sdio1_mmc, 0x18, 24, 0),
561 CYGNUS_PIN_GROUP(cam_led, 0x1c, 0, 0),
562 CYGNUS_PIN_GROUP(sw_led1, 0x1c, 0, 1),
563 CYGNUS_PIN_GROUP(cam_0, 0x1c, 4, 0),
564 CYGNUS_PIN_GROUP(cam_1, 0x1c, 8, 0),
565 CYGNUS_PIN_GROUP(sram_1, 0x1c, 8, 1),
566 CYGNUS_PIN_GROUP(qspi_1, 0x1c, 12, 0),
567 CYGNUS_PIN_GROUP(bsc1, 0x1c, 16, 0),
568 CYGNUS_PIN_GROUP(pcie_clkreq, 0x1c, 16, 1),
569 CYGNUS_PIN_GROUP(smart_card0_fcb, 0x20, 0, 0),
570 CYGNUS_PIN_GROUP(i2s0_1, 0x20, 0, 1),
571 CYGNUS_PIN_GROUP(smart_card1_fcb, 0x20, 4, 0),
572 CYGNUS_PIN_GROUP(i2s1_1, 0x20, 4, 1),
573 CYGNUS_PIN_GROUP(gpio0_3p3, 0x28, 0, 0),
574 CYGNUS_PIN_GROUP(usb0_oc, 0x28, 0, 1),
575 CYGNUS_PIN_GROUP(gpio1_3p3, 0x28, 4, 0),
576 CYGNUS_PIN_GROUP(usb1_oc, 0x28, 4, 1),
577 CYGNUS_PIN_GROUP(gpio2_3p3, 0x28, 8, 0),
578 CYGNUS_PIN_GROUP(usb2_oc, 0x28, 8, 1),
579 };
580
581 /*
582 * List of groups supported by functions
583 */
584 static const char * const i2s0_grps[] = { "i2s0_0_grp", "i2s0_1_grp" };
585 static const char * const i2s1_grps[] = { "i2s1_0_grp", "i2s1_1_grp" };
586 static const char * const i2s2_grps[] = { "i2s2_0_grp", "i2s2_1_grp",
587 "i2s2_2_grp", "i2s2_3_grp", "i2s2_4_grp" };
588 static const char * const spdif_grps[] = { "spdif_grp" };
589 static const char * const pwm0_grps[] = { "pwm0_grp" };
590 static const char * const pwm1_grps[] = { "pwm1_grp" };
591 static const char * const pwm2_grps[] = { "pwm2_grp" };
592 static const char * const pwm3_grps[] = { "pwm3_grp" };
593 static const char * const pwm4_grps[] = { "pwm4_grp" };
594 static const char * const pwm5_grps[] = { "pwm5_grp" };
595 static const char * const key_grps[] = { "key0_grp", "key1_grp", "key2_grp",
596 "key3_grp", "key4_grp", "key5_grp", "key6_grp", "key7_grp", "key8_grp",
597 "key9_grp", "key10_grp", "key11_grp", "key12_grp", "key13_grp",
598 "key14_grp", "key15_grp" };
599 static const char * const audio_dte_grps[] = { "audio_dte0_grp",
600 "audio_dte1_grp", "audio_dte2_grp", "audio_dte3_grp" };
601 static const char * const smart_card0_grps[] = { "smart_card0_grp",
602 "smart_card0_fcb_grp" };
603 static const char * const smart_card1_grps[] = { "smart_card1_grp",
604 "smart_card1_fcb_grp" };
605 static const char * const spi0_grps[] = { "spi0_grp" };
606 static const char * const spi1_grps[] = { "spi1_grp" };
607 static const char * const spi2_grps[] = { "spi2_grp" };
608 static const char * const spi3_grps[] = { "spi3_grp" };
609 static const char * const spi4_grps[] = { "spi4_0_grp", "spi4_1_grp" };
610 static const char * const spi5_grps[] = { "spi5_grp" };
611
612 static const char * const sw_led0_grps[] = { "sw_led0_0_grp",
613 "sw_led0_1_grp" };
614 static const char * const sw_led1_grps[] = { "sw_led1_grp" };
615 static const char * const sw_led2_grps[] = { "sw_led2_0_grp",
616 "sw_led2_1_grp" };
617 static const char * const d1w_grps[] = { "d1w_grp" };
618 static const char * const lcd_grps[] = { "lcd_grp" };
619 static const char * const sram_grps[] = { "sram_0_grp", "sram_1_grp" };
620
621 static const char * const uart0_grps[] = { "uart0_grp" };
622 static const char * const uart1_grps[] = { "uart1_grp", "uart1_dte_grp" };
623 static const char * const uart2_grps[] = { "uart2_grp" };
624 static const char * const uart3_grps[] = { "uart3_grp" };
625 static const char * const uart4_grps[] = { "uart4_grp" };
626 static const char * const qspi_grps[] = { "qspi_0_grp", "qspi_1_grp" };
627 static const char * const nand_grps[] = { "nand_grp" };
628 static const char * const sdio0_grps[] = { "sdio0_grp", "sdio0_cd_grp",
629 "sdio0_mmc_grp" };
630 static const char * const sdio1_grps[] = { "sdio1_data_0_grp",
631 "sdio1_data_1_grp", "sdio1_cd_grp", "sdio1_led_grp", "sdio1_mmc_grp" };
632 static const char * const can0_grps[] = { "can0_grp" };
633 static const char * const can1_grps[] = { "can1_grp" };
634 static const char * const cam_grps[] = { "cam_led_grp", "cam_0_grp",
635 "cam_1_grp" };
636 static const char * const bsc1_grps[] = { "bsc1_grp" };
637 static const char * const pcie_clkreq_grps[] = { "pcie_clkreq_grp" };
638 static const char * const usb0_oc_grps[] = { "usb0_oc_grp" };
639 static const char * const usb1_oc_grps[] = { "usb1_oc_grp" };
640 static const char * const usb2_oc_grps[] = { "usb2_oc_grp" };
641
642 #define CYGNUS_PIN_FUNCTION(func) \
643 { \
644 .name = #func, \
645 .groups = func ## _grps, \
646 .num_groups = ARRAY_SIZE(func ## _grps), \
647 }
648
649 /*
650 * List of supported functions in Cygnus
651 */
652 static const struct cygnus_pin_function cygnus_pin_functions[] = {
653 CYGNUS_PIN_FUNCTION(i2s0),
654 CYGNUS_PIN_FUNCTION(i2s1),
655 CYGNUS_PIN_FUNCTION(i2s2),
656 CYGNUS_PIN_FUNCTION(spdif),
657 CYGNUS_PIN_FUNCTION(pwm0),
658 CYGNUS_PIN_FUNCTION(pwm1),
659 CYGNUS_PIN_FUNCTION(pwm2),
660 CYGNUS_PIN_FUNCTION(pwm3),
661 CYGNUS_PIN_FUNCTION(pwm4),
662 CYGNUS_PIN_FUNCTION(pwm5),
663 CYGNUS_PIN_FUNCTION(key),
664 CYGNUS_PIN_FUNCTION(audio_dte),
665 CYGNUS_PIN_FUNCTION(smart_card0),
666 CYGNUS_PIN_FUNCTION(smart_card1),
667 CYGNUS_PIN_FUNCTION(spi0),
668 CYGNUS_PIN_FUNCTION(spi1),
669 CYGNUS_PIN_FUNCTION(spi2),
670 CYGNUS_PIN_FUNCTION(spi3),
671 CYGNUS_PIN_FUNCTION(spi4),
672 CYGNUS_PIN_FUNCTION(spi5),
673 CYGNUS_PIN_FUNCTION(sw_led0),
674 CYGNUS_PIN_FUNCTION(sw_led1),
675 CYGNUS_PIN_FUNCTION(sw_led2),
676 CYGNUS_PIN_FUNCTION(d1w),
677 CYGNUS_PIN_FUNCTION(lcd),
678 CYGNUS_PIN_FUNCTION(sram),
679 CYGNUS_PIN_FUNCTION(uart0),
680 CYGNUS_PIN_FUNCTION(uart1),
681 CYGNUS_PIN_FUNCTION(uart2),
682 CYGNUS_PIN_FUNCTION(uart3),
683 CYGNUS_PIN_FUNCTION(uart4),
684 CYGNUS_PIN_FUNCTION(qspi),
685 CYGNUS_PIN_FUNCTION(nand),
686 CYGNUS_PIN_FUNCTION(sdio0),
687 CYGNUS_PIN_FUNCTION(sdio1),
688 CYGNUS_PIN_FUNCTION(can0),
689 CYGNUS_PIN_FUNCTION(can1),
690 CYGNUS_PIN_FUNCTION(cam),
691 CYGNUS_PIN_FUNCTION(bsc1),
692 CYGNUS_PIN_FUNCTION(pcie_clkreq),
693 CYGNUS_PIN_FUNCTION(usb0_oc),
694 CYGNUS_PIN_FUNCTION(usb1_oc),
695 CYGNUS_PIN_FUNCTION(usb2_oc),
696 };
697
cygnus_get_groups_count(struct pinctrl_dev * pctrl_dev)698 static int cygnus_get_groups_count(struct pinctrl_dev *pctrl_dev)
699 {
700 struct cygnus_pinctrl *pinctrl = pinctrl_dev_get_drvdata(pctrl_dev);
701
702 return pinctrl->num_groups;
703 }
704
cygnus_get_group_name(struct pinctrl_dev * pctrl_dev,unsigned selector)705 static const char *cygnus_get_group_name(struct pinctrl_dev *pctrl_dev,
706 unsigned selector)
707 {
708 struct cygnus_pinctrl *pinctrl = pinctrl_dev_get_drvdata(pctrl_dev);
709
710 return pinctrl->groups[selector].name;
711 }
712
cygnus_get_group_pins(struct pinctrl_dev * pctrl_dev,unsigned selector,const unsigned ** pins,unsigned * num_pins)713 static int cygnus_get_group_pins(struct pinctrl_dev *pctrl_dev,
714 unsigned selector, const unsigned **pins,
715 unsigned *num_pins)
716 {
717 struct cygnus_pinctrl *pinctrl = pinctrl_dev_get_drvdata(pctrl_dev);
718
719 *pins = pinctrl->groups[selector].pins;
720 *num_pins = pinctrl->groups[selector].num_pins;
721
722 return 0;
723 }
724
cygnus_pin_dbg_show(struct pinctrl_dev * pctrl_dev,struct seq_file * s,unsigned offset)725 static void cygnus_pin_dbg_show(struct pinctrl_dev *pctrl_dev,
726 struct seq_file *s, unsigned offset)
727 {
728 seq_printf(s, " %s", dev_name(pctrl_dev->dev));
729 }
730
731 static const struct pinctrl_ops cygnus_pinctrl_ops = {
732 .get_groups_count = cygnus_get_groups_count,
733 .get_group_name = cygnus_get_group_name,
734 .get_group_pins = cygnus_get_group_pins,
735 .pin_dbg_show = cygnus_pin_dbg_show,
736 .dt_node_to_map = pinconf_generic_dt_node_to_map_group,
737 .dt_free_map = pinctrl_utils_free_map,
738 };
739
cygnus_get_functions_count(struct pinctrl_dev * pctrl_dev)740 static int cygnus_get_functions_count(struct pinctrl_dev *pctrl_dev)
741 {
742 struct cygnus_pinctrl *pinctrl = pinctrl_dev_get_drvdata(pctrl_dev);
743
744 return pinctrl->num_functions;
745 }
746
cygnus_get_function_name(struct pinctrl_dev * pctrl_dev,unsigned selector)747 static const char *cygnus_get_function_name(struct pinctrl_dev *pctrl_dev,
748 unsigned selector)
749 {
750 struct cygnus_pinctrl *pinctrl = pinctrl_dev_get_drvdata(pctrl_dev);
751
752 return pinctrl->functions[selector].name;
753 }
754
cygnus_get_function_groups(struct pinctrl_dev * pctrl_dev,unsigned selector,const char * const ** groups,unsigned * const num_groups)755 static int cygnus_get_function_groups(struct pinctrl_dev *pctrl_dev,
756 unsigned selector,
757 const char * const **groups,
758 unsigned * const num_groups)
759 {
760 struct cygnus_pinctrl *pinctrl = pinctrl_dev_get_drvdata(pctrl_dev);
761
762 *groups = pinctrl->functions[selector].groups;
763 *num_groups = pinctrl->functions[selector].num_groups;
764
765 return 0;
766 }
767
cygnus_pinmux_set(struct cygnus_pinctrl * pinctrl,const struct cygnus_pin_function * func,const struct cygnus_pin_group * grp,struct cygnus_mux_log * mux_log)768 static int cygnus_pinmux_set(struct cygnus_pinctrl *pinctrl,
769 const struct cygnus_pin_function *func,
770 const struct cygnus_pin_group *grp,
771 struct cygnus_mux_log *mux_log)
772 {
773 const struct cygnus_mux *mux = &grp->mux;
774 int i;
775 u32 val, mask = 0x7;
776 unsigned long flags;
777
778 for (i = 0; i < CYGNUS_NUM_IOMUX; i++) {
779 if (mux->offset != mux_log[i].mux.offset ||
780 mux->shift != mux_log[i].mux.shift)
781 continue;
782
783 /* match found if we reach here */
784
785 /* if this is a new configuration, just do it! */
786 if (!mux_log[i].is_configured)
787 break;
788
789 /*
790 * IOMUX has been configured previously and one is trying to
791 * configure it to a different function
792 */
793 if (mux_log[i].mux.alt != mux->alt) {
794 dev_err(pinctrl->dev,
795 "double configuration error detected!\n");
796 dev_err(pinctrl->dev, "func:%s grp:%s\n",
797 func->name, grp->name);
798 return -EINVAL;
799 } else {
800 /*
801 * One tries to configure it to the same function.
802 * Just quit and don't bother
803 */
804 return 0;
805 }
806 }
807
808 mux_log[i].mux.alt = mux->alt;
809 mux_log[i].is_configured = true;
810
811 spin_lock_irqsave(&pinctrl->lock, flags);
812
813 val = readl(pinctrl->base0 + grp->mux.offset);
814 val &= ~(mask << grp->mux.shift);
815 val |= grp->mux.alt << grp->mux.shift;
816 writel(val, pinctrl->base0 + grp->mux.offset);
817
818 spin_unlock_irqrestore(&pinctrl->lock, flags);
819
820 return 0;
821 }
822
cygnus_pinmux_set_mux(struct pinctrl_dev * pctrl_dev,unsigned func_select,unsigned grp_select)823 static int cygnus_pinmux_set_mux(struct pinctrl_dev *pctrl_dev,
824 unsigned func_select, unsigned grp_select)
825 {
826 struct cygnus_pinctrl *pinctrl = pinctrl_dev_get_drvdata(pctrl_dev);
827 const struct cygnus_pin_function *func =
828 &pinctrl->functions[func_select];
829 const struct cygnus_pin_group *grp = &pinctrl->groups[grp_select];
830
831 dev_dbg(pctrl_dev->dev, "func:%u name:%s grp:%u name:%s\n",
832 func_select, func->name, grp_select, grp->name);
833
834 dev_dbg(pctrl_dev->dev, "offset:0x%08x shift:%u alt:%u\n",
835 grp->mux.offset, grp->mux.shift, grp->mux.alt);
836
837 return cygnus_pinmux_set(pinctrl, func, grp, pinctrl->mux_log);
838 }
839
cygnus_gpio_request_enable(struct pinctrl_dev * pctrl_dev,struct pinctrl_gpio_range * range,unsigned pin)840 static int cygnus_gpio_request_enable(struct pinctrl_dev *pctrl_dev,
841 struct pinctrl_gpio_range *range,
842 unsigned pin)
843 {
844 struct cygnus_pinctrl *pinctrl = pinctrl_dev_get_drvdata(pctrl_dev);
845 const struct cygnus_gpio_mux *mux = pctrl_dev->desc->pins[pin].drv_data;
846 u32 val;
847 unsigned long flags;
848
849 /* not all pins support GPIO pinmux override */
850 if (!mux->is_supported)
851 return -ENOTSUPP;
852
853 spin_lock_irqsave(&pinctrl->lock, flags);
854
855 val = readl(pinctrl->base1 + mux->offset);
856 val |= 0x3 << mux->shift;
857 writel(val, pinctrl->base1 + mux->offset);
858
859 spin_unlock_irqrestore(&pinctrl->lock, flags);
860
861 dev_dbg(pctrl_dev->dev,
862 "gpio request enable pin=%u offset=0x%x shift=%u\n",
863 pin, mux->offset, mux->shift);
864
865 return 0;
866 }
867
cygnus_gpio_disable_free(struct pinctrl_dev * pctrl_dev,struct pinctrl_gpio_range * range,unsigned pin)868 static void cygnus_gpio_disable_free(struct pinctrl_dev *pctrl_dev,
869 struct pinctrl_gpio_range *range,
870 unsigned pin)
871 {
872 struct cygnus_pinctrl *pinctrl = pinctrl_dev_get_drvdata(pctrl_dev);
873 struct cygnus_gpio_mux *mux = pctrl_dev->desc->pins[pin].drv_data;
874 u32 val;
875 unsigned long flags;
876
877 if (!mux->is_supported)
878 return;
879
880 spin_lock_irqsave(&pinctrl->lock, flags);
881
882 val = readl(pinctrl->base1 + mux->offset);
883 val &= ~(0x3 << mux->shift);
884 writel(val, pinctrl->base1 + mux->offset);
885
886 spin_unlock_irqrestore(&pinctrl->lock, flags);
887
888 dev_err(pctrl_dev->dev,
889 "gpio disable free pin=%u offset=0x%x shift=%u\n",
890 pin, mux->offset, mux->shift);
891 }
892
893 static const struct pinmux_ops cygnus_pinmux_ops = {
894 .get_functions_count = cygnus_get_functions_count,
895 .get_function_name = cygnus_get_function_name,
896 .get_function_groups = cygnus_get_function_groups,
897 .set_mux = cygnus_pinmux_set_mux,
898 .gpio_request_enable = cygnus_gpio_request_enable,
899 .gpio_disable_free = cygnus_gpio_disable_free,
900 };
901
902 static struct pinctrl_desc cygnus_pinctrl_desc = {
903 .name = "cygnus-pinmux",
904 .pctlops = &cygnus_pinctrl_ops,
905 .pmxops = &cygnus_pinmux_ops,
906 };
907
cygnus_mux_log_init(struct cygnus_pinctrl * pinctrl)908 static int cygnus_mux_log_init(struct cygnus_pinctrl *pinctrl)
909 {
910 struct cygnus_mux_log *log;
911 unsigned int i, j;
912
913 pinctrl->mux_log = devm_kcalloc(pinctrl->dev, CYGNUS_NUM_IOMUX,
914 sizeof(struct cygnus_mux_log),
915 GFP_KERNEL);
916 if (!pinctrl->mux_log)
917 return -ENOMEM;
918
919 for (i = 0; i < CYGNUS_NUM_IOMUX_REGS; i++) {
920 for (j = 0; j < CYGNUS_NUM_MUX_PER_REG; j++) {
921 log = &pinctrl->mux_log[i * CYGNUS_NUM_MUX_PER_REG
922 + j];
923 log->mux.offset = i * 4;
924 log->mux.shift = j * 4;
925 log->mux.alt = 0;
926 log->is_configured = false;
927 }
928 }
929
930 return 0;
931 }
932
cygnus_pinmux_probe(struct platform_device * pdev)933 static int cygnus_pinmux_probe(struct platform_device *pdev)
934 {
935 struct cygnus_pinctrl *pinctrl;
936 int i, ret;
937 struct pinctrl_pin_desc *pins;
938 unsigned num_pins = ARRAY_SIZE(cygnus_pins);
939
940 pinctrl = devm_kzalloc(&pdev->dev, sizeof(*pinctrl), GFP_KERNEL);
941 if (!pinctrl)
942 return -ENOMEM;
943
944 pinctrl->dev = &pdev->dev;
945 platform_set_drvdata(pdev, pinctrl);
946 spin_lock_init(&pinctrl->lock);
947
948 pinctrl->base0 = devm_platform_ioremap_resource(pdev, 0);
949 if (IS_ERR(pinctrl->base0)) {
950 dev_err(&pdev->dev, "unable to map I/O space\n");
951 return PTR_ERR(pinctrl->base0);
952 }
953
954 pinctrl->base1 = devm_platform_ioremap_resource(pdev, 1);
955 if (IS_ERR(pinctrl->base1)) {
956 dev_err(&pdev->dev, "unable to map I/O space\n");
957 return PTR_ERR(pinctrl->base1);
958 }
959
960 ret = cygnus_mux_log_init(pinctrl);
961 if (ret) {
962 dev_err(&pdev->dev, "unable to initialize IOMUX log\n");
963 return ret;
964 }
965
966 pins = devm_kcalloc(&pdev->dev, num_pins, sizeof(*pins), GFP_KERNEL);
967 if (!pins)
968 return -ENOMEM;
969
970 for (i = 0; i < num_pins; i++) {
971 pins[i].number = cygnus_pins[i].pin;
972 pins[i].name = cygnus_pins[i].name;
973 pins[i].drv_data = &cygnus_pins[i].gpio_mux;
974 }
975
976 pinctrl->groups = cygnus_pin_groups;
977 pinctrl->num_groups = ARRAY_SIZE(cygnus_pin_groups);
978 pinctrl->functions = cygnus_pin_functions;
979 pinctrl->num_functions = ARRAY_SIZE(cygnus_pin_functions);
980 cygnus_pinctrl_desc.pins = pins;
981 cygnus_pinctrl_desc.npins = num_pins;
982
983 pinctrl->pctl = devm_pinctrl_register(&pdev->dev, &cygnus_pinctrl_desc,
984 pinctrl);
985 if (IS_ERR(pinctrl->pctl)) {
986 dev_err(&pdev->dev, "unable to register Cygnus IOMUX pinctrl\n");
987 return PTR_ERR(pinctrl->pctl);
988 }
989
990 return 0;
991 }
992
993 static const struct of_device_id cygnus_pinmux_of_match[] = {
994 { .compatible = "brcm,cygnus-pinmux" },
995 { }
996 };
997
998 static struct platform_driver cygnus_pinmux_driver = {
999 .driver = {
1000 .name = "cygnus-pinmux",
1001 .of_match_table = cygnus_pinmux_of_match,
1002 .suppress_bind_attrs = true,
1003 },
1004 .probe = cygnus_pinmux_probe,
1005 };
1006
cygnus_pinmux_init(void)1007 static int __init cygnus_pinmux_init(void)
1008 {
1009 return platform_driver_register(&cygnus_pinmux_driver);
1010 }
1011 arch_initcall(cygnus_pinmux_init);
1012