1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3  * Copyright (c) 2014 MediaTek Inc.
4  * Author: Hongzhou.Yang <hongzhou.yang@mediatek.com>
5  */
6 
7 #include <linux/init.h>
8 #include <linux/platform_device.h>
9 #include <linux/of.h>
10 #include <linux/of_device.h>
11 #include <linux/pinctrl/pinctrl.h>
12 #include <linux/regmap.h>
13 #include <dt-bindings/pinctrl/mt65xx.h>
14 
15 #include "pinctrl-mtk-common.h"
16 #include "pinctrl-mtk-mt8135.h"
17 
18 #define DRV_BASE1				0x500
19 #define DRV_BASE2				0x510
20 #define PUPD_BASE1				0x400
21 #define PUPD_BASE2				0x450
22 #define R0_BASE1				0x4d0
23 #define R1_BASE1				0x200
24 #define R1_BASE2				0x250
25 
26 struct mtk_spec_pull_set {
27 	unsigned char pin;
28 	unsigned char pupd_bit;
29 	unsigned short pupd_offset;
30 	unsigned short r0_offset;
31 	unsigned short r1_offset;
32 	unsigned char r0_bit;
33 	unsigned char r1_bit;
34 };
35 
36 #define SPEC_PULL(_pin, _pupd_offset, _pupd_bit, _r0_offset, \
37 	_r0_bit, _r1_offset, _r1_bit)	\
38 	{	\
39 		.pin = _pin,	\
40 		.pupd_offset = _pupd_offset,	\
41 		.pupd_bit = _pupd_bit,	\
42 		.r0_offset = _r0_offset, \
43 		.r0_bit = _r0_bit, \
44 		.r1_offset = _r1_offset, \
45 		.r1_bit = _r1_bit, \
46 	}
47 
48 static const struct mtk_drv_group_desc mt8135_drv_grp[] =  {
49 	/* E8E4E2 2/4/6/8/10/12/14/16 */
50 	MTK_DRV_GRP(2, 16, 0, 2, 2),
51 	/* E8E4  4/8/12/16 */
52 	MTK_DRV_GRP(4, 16, 1, 2, 4),
53 	/* E4E2  2/4/6/8 */
54 	MTK_DRV_GRP(2, 8, 0, 1, 2),
55 	/* E16E8E4 4/8/12/16/20/24/28/32 */
56 	MTK_DRV_GRP(4, 32, 0, 2, 4)
57 };
58 
59 static const struct mtk_pin_drv_grp mt8135_pin_drv[] = {
60 	MTK_PIN_DRV_GRP(0, DRV_BASE1, 0, 0),
61 	MTK_PIN_DRV_GRP(1, DRV_BASE1, 0, 0),
62 	MTK_PIN_DRV_GRP(2, DRV_BASE1, 0, 0),
63 	MTK_PIN_DRV_GRP(3, DRV_BASE1, 0, 0),
64 	MTK_PIN_DRV_GRP(4, DRV_BASE1, 4, 0),
65 	MTK_PIN_DRV_GRP(5, DRV_BASE1, 8, 0),
66 	MTK_PIN_DRV_GRP(6, DRV_BASE1, 0, 0),
67 	MTK_PIN_DRV_GRP(7, DRV_BASE1, 0, 0),
68 	MTK_PIN_DRV_GRP(8, DRV_BASE1, 0, 0),
69 	MTK_PIN_DRV_GRP(9, DRV_BASE1, 0, 0),
70 
71 	MTK_PIN_DRV_GRP(10, DRV_BASE1, 12, 1),
72 	MTK_PIN_DRV_GRP(11, DRV_BASE1, 12, 1),
73 	MTK_PIN_DRV_GRP(12, DRV_BASE1, 12, 1),
74 	MTK_PIN_DRV_GRP(13, DRV_BASE1, 12, 1),
75 	MTK_PIN_DRV_GRP(14, DRV_BASE1, 12, 1),
76 	MTK_PIN_DRV_GRP(15, DRV_BASE1, 12, 1),
77 	MTK_PIN_DRV_GRP(16, DRV_BASE1, 12, 1),
78 	MTK_PIN_DRV_GRP(17, DRV_BASE1, 16, 1),
79 	MTK_PIN_DRV_GRP(18, DRV_BASE1, 16, 1),
80 	MTK_PIN_DRV_GRP(19, DRV_BASE1, 16, 1),
81 	MTK_PIN_DRV_GRP(20, DRV_BASE1, 16, 1),
82 	MTK_PIN_DRV_GRP(21, DRV_BASE1, 16, 1),
83 	MTK_PIN_DRV_GRP(22, DRV_BASE1, 16, 1),
84 	MTK_PIN_DRV_GRP(23, DRV_BASE1, 16, 1),
85 	MTK_PIN_DRV_GRP(24, DRV_BASE1, 16, 1),
86 	MTK_PIN_DRV_GRP(33, DRV_BASE1, 24, 1),
87 	MTK_PIN_DRV_GRP(34, DRV_BASE2, 12, 2),
88 	MTK_PIN_DRV_GRP(37, DRV_BASE2, 20, 1),
89 	MTK_PIN_DRV_GRP(38, DRV_BASE2, 20, 1),
90 	MTK_PIN_DRV_GRP(39, DRV_BASE2, 20, 1),
91 	MTK_PIN_DRV_GRP(40, DRV_BASE2, 24, 1),
92 	MTK_PIN_DRV_GRP(41, DRV_BASE2, 24, 1),
93 	MTK_PIN_DRV_GRP(42, DRV_BASE2, 24, 1),
94 	MTK_PIN_DRV_GRP(43, DRV_BASE2, 28, 1),
95 	MTK_PIN_DRV_GRP(44, DRV_BASE2, 28, 1),
96 	MTK_PIN_DRV_GRP(45, DRV_BASE2, 28, 1),
97 	MTK_PIN_DRV_GRP(46, DRV_BASE2, 28, 1),
98 	MTK_PIN_DRV_GRP(47, DRV_BASE2, 28, 1),
99 
100 	MTK_PIN_DRV_GRP(49, DRV_BASE2+0x10, 0, 1),
101 	MTK_PIN_DRV_GRP(50, DRV_BASE2+0x10, 4, 1),
102 	MTK_PIN_DRV_GRP(51, DRV_BASE2+0x10, 8, 1),
103 	MTK_PIN_DRV_GRP(52, DRV_BASE2+0x10, 12, 2),
104 	MTK_PIN_DRV_GRP(53, DRV_BASE2+0x10, 16, 1),
105 	MTK_PIN_DRV_GRP(54, DRV_BASE2+0x10, 20, 1),
106 	MTK_PIN_DRV_GRP(55, DRV_BASE2+0x10, 24, 1),
107 	MTK_PIN_DRV_GRP(56, DRV_BASE2+0x10, 28, 1),
108 
109 	MTK_PIN_DRV_GRP(57, DRV_BASE2+0x20, 0, 1),
110 	MTK_PIN_DRV_GRP(58, DRV_BASE2+0x20, 0, 1),
111 	MTK_PIN_DRV_GRP(59, DRV_BASE2+0x20, 0, 1),
112 	MTK_PIN_DRV_GRP(60, DRV_BASE2+0x20, 0, 1),
113 	MTK_PIN_DRV_GRP(61, DRV_BASE2+0x20, 0, 1),
114 	MTK_PIN_DRV_GRP(62, DRV_BASE2+0x20, 0, 1),
115 	MTK_PIN_DRV_GRP(63, DRV_BASE2+0x20, 4, 1),
116 	MTK_PIN_DRV_GRP(64, DRV_BASE2+0x20, 8, 1),
117 	MTK_PIN_DRV_GRP(65, DRV_BASE2+0x20, 12, 1),
118 	MTK_PIN_DRV_GRP(66, DRV_BASE2+0x20, 16, 1),
119 	MTK_PIN_DRV_GRP(67, DRV_BASE2+0x20, 20, 1),
120 	MTK_PIN_DRV_GRP(68, DRV_BASE2+0x20, 24, 1),
121 	MTK_PIN_DRV_GRP(69, DRV_BASE2+0x20, 28, 1),
122 
123 	MTK_PIN_DRV_GRP(70, DRV_BASE2+0x30, 0, 1),
124 	MTK_PIN_DRV_GRP(71, DRV_BASE2+0x30, 4, 1),
125 	MTK_PIN_DRV_GRP(72, DRV_BASE2+0x30, 8, 1),
126 	MTK_PIN_DRV_GRP(73, DRV_BASE2+0x30, 12, 1),
127 	MTK_PIN_DRV_GRP(74, DRV_BASE2+0x30, 16, 1),
128 	MTK_PIN_DRV_GRP(75, DRV_BASE2+0x30, 20, 1),
129 	MTK_PIN_DRV_GRP(76, DRV_BASE2+0x30, 24, 1),
130 	MTK_PIN_DRV_GRP(77, DRV_BASE2+0x30, 28, 3),
131 	MTK_PIN_DRV_GRP(78, DRV_BASE2+0x30, 28, 3),
132 
133 	MTK_PIN_DRV_GRP(79, DRV_BASE2+0x40, 0, 3),
134 	MTK_PIN_DRV_GRP(80, DRV_BASE2+0x40, 4, 3),
135 
136 	MTK_PIN_DRV_GRP(81, DRV_BASE2+0x30, 28, 3),
137 	MTK_PIN_DRV_GRP(82, DRV_BASE2+0x30, 28, 3),
138 
139 	MTK_PIN_DRV_GRP(83, DRV_BASE2+0x40, 8, 3),
140 	MTK_PIN_DRV_GRP(84, DRV_BASE2+0x40, 8, 3),
141 	MTK_PIN_DRV_GRP(85, DRV_BASE2+0x40, 12, 3),
142 	MTK_PIN_DRV_GRP(86, DRV_BASE2+0x40, 16, 3),
143 	MTK_PIN_DRV_GRP(87, DRV_BASE2+0x40, 8, 3),
144 	MTK_PIN_DRV_GRP(88, DRV_BASE2+0x40, 8, 3),
145 
146 	MTK_PIN_DRV_GRP(89, DRV_BASE2+0x50, 12, 0),
147 	MTK_PIN_DRV_GRP(90, DRV_BASE2+0x50, 12, 0),
148 	MTK_PIN_DRV_GRP(91, DRV_BASE2+0x50, 12, 0),
149 	MTK_PIN_DRV_GRP(92, DRV_BASE2+0x50, 12, 0),
150 	MTK_PIN_DRV_GRP(93, DRV_BASE2+0x50, 12, 0),
151 	MTK_PIN_DRV_GRP(94, DRV_BASE2+0x50, 12, 0),
152 	MTK_PIN_DRV_GRP(95, DRV_BASE2+0x50, 12, 0),
153 
154 	MTK_PIN_DRV_GRP(96, DRV_BASE1+0xb0, 28, 0),
155 
156 	MTK_PIN_DRV_GRP(97, DRV_BASE2+0x50, 12, 0),
157 	MTK_PIN_DRV_GRP(98, DRV_BASE2+0x50, 16, 0),
158 	MTK_PIN_DRV_GRP(99, DRV_BASE2+0x50, 20, 1),
159 	MTK_PIN_DRV_GRP(102, DRV_BASE2+0x50, 24, 1),
160 	MTK_PIN_DRV_GRP(103, DRV_BASE2+0x50, 28, 1),
161 
162 
163 	MTK_PIN_DRV_GRP(104, DRV_BASE2+0x60, 0, 1),
164 	MTK_PIN_DRV_GRP(105, DRV_BASE2+0x60, 4, 1),
165 	MTK_PIN_DRV_GRP(106, DRV_BASE2+0x60, 4, 1),
166 	MTK_PIN_DRV_GRP(107, DRV_BASE2+0x60, 4, 1),
167 	MTK_PIN_DRV_GRP(108, DRV_BASE2+0x60, 4, 1),
168 	MTK_PIN_DRV_GRP(109, DRV_BASE2+0x60, 8, 2),
169 	MTK_PIN_DRV_GRP(110, DRV_BASE2+0x60, 12, 2),
170 	MTK_PIN_DRV_GRP(111, DRV_BASE2+0x60, 16, 2),
171 	MTK_PIN_DRV_GRP(112, DRV_BASE2+0x60, 20, 2),
172 	MTK_PIN_DRV_GRP(113, DRV_BASE2+0x60, 24, 2),
173 	MTK_PIN_DRV_GRP(114, DRV_BASE2+0x60, 28, 2),
174 
175 	MTK_PIN_DRV_GRP(115, DRV_BASE2+0x70, 0, 2),
176 	MTK_PIN_DRV_GRP(116, DRV_BASE2+0x70, 4, 2),
177 	MTK_PIN_DRV_GRP(117, DRV_BASE2+0x70, 8, 2),
178 	MTK_PIN_DRV_GRP(118, DRV_BASE2+0x70, 12, 2),
179 	MTK_PIN_DRV_GRP(119, DRV_BASE2+0x70, 16, 2),
180 	MTK_PIN_DRV_GRP(120, DRV_BASE2+0x70, 20, 2),
181 
182 	MTK_PIN_DRV_GRP(181, DRV_BASE1+0xa0, 12, 1),
183 	MTK_PIN_DRV_GRP(182, DRV_BASE1+0xa0, 16, 1),
184 	MTK_PIN_DRV_GRP(183, DRV_BASE1+0xa0, 20, 1),
185 	MTK_PIN_DRV_GRP(184, DRV_BASE1+0xa0, 24, 1),
186 	MTK_PIN_DRV_GRP(185, DRV_BASE1+0xa0, 28, 1),
187 
188 	MTK_PIN_DRV_GRP(186, DRV_BASE1+0xb0, 0, 2),
189 	MTK_PIN_DRV_GRP(187, DRV_BASE1+0xb0, 0, 2),
190 	MTK_PIN_DRV_GRP(188, DRV_BASE1+0xb0, 0, 2),
191 	MTK_PIN_DRV_GRP(189, DRV_BASE1+0xb0, 0, 2),
192 	MTK_PIN_DRV_GRP(190, DRV_BASE1+0xb0, 4, 1),
193 	MTK_PIN_DRV_GRP(191, DRV_BASE1+0xb0, 8, 1),
194 	MTK_PIN_DRV_GRP(192, DRV_BASE1+0xb0, 12, 1),
195 
196 	MTK_PIN_DRV_GRP(197, DRV_BASE1+0xb0, 16, 0),
197 	MTK_PIN_DRV_GRP(198, DRV_BASE1+0xb0, 16, 0),
198 	MTK_PIN_DRV_GRP(199, DRV_BASE1+0xb0, 20, 0),
199 	MTK_PIN_DRV_GRP(200, DRV_BASE1+0xb0, 24, 0),
200 	MTK_PIN_DRV_GRP(201, DRV_BASE1+0xb0, 16, 0),
201 	MTK_PIN_DRV_GRP(202, DRV_BASE1+0xb0, 16, 0)
202 };
203 
204 static const struct mtk_spec_pull_set spec_pupd[] = {
205 	SPEC_PULL(0, PUPD_BASE1, 0, R0_BASE1, 9, R1_BASE1, 0),
206 	SPEC_PULL(1, PUPD_BASE1, 1, R0_BASE1, 8, R1_BASE1, 1),
207 	SPEC_PULL(2, PUPD_BASE1, 2, R0_BASE1, 7, R1_BASE1, 2),
208 	SPEC_PULL(3, PUPD_BASE1, 3, R0_BASE1, 6, R1_BASE1, 3),
209 	SPEC_PULL(4, PUPD_BASE1, 4, R0_BASE1, 1, R1_BASE1, 4),
210 	SPEC_PULL(5, PUPD_BASE1, 5, R0_BASE1, 0, R1_BASE1, 5),
211 	SPEC_PULL(6, PUPD_BASE1, 6, R0_BASE1, 5, R1_BASE1, 6),
212 	SPEC_PULL(7, PUPD_BASE1, 7, R0_BASE1, 4, R1_BASE1, 7),
213 	SPEC_PULL(8, PUPD_BASE1, 8, R0_BASE1, 3, R1_BASE1, 8),
214 	SPEC_PULL(9, PUPD_BASE1, 9, R0_BASE1, 2, R1_BASE1, 9),
215 	SPEC_PULL(89, PUPD_BASE2, 9, R0_BASE1, 18, R1_BASE2, 9),
216 	SPEC_PULL(90, PUPD_BASE2, 10, R0_BASE1, 19, R1_BASE2, 10),
217 	SPEC_PULL(91, PUPD_BASE2, 11, R0_BASE1, 23, R1_BASE2, 11),
218 	SPEC_PULL(92, PUPD_BASE2, 12, R0_BASE1, 24, R1_BASE2, 12),
219 	SPEC_PULL(93, PUPD_BASE2, 13, R0_BASE1, 25, R1_BASE2, 13),
220 	SPEC_PULL(94, PUPD_BASE2, 14, R0_BASE1, 22, R1_BASE2, 14),
221 	SPEC_PULL(95, PUPD_BASE2, 15, R0_BASE1, 20, R1_BASE2, 15),
222 	SPEC_PULL(96, PUPD_BASE2+0x10, 0, R0_BASE1, 16, R1_BASE2+0x10, 0),
223 	SPEC_PULL(97, PUPD_BASE2+0x10, 1, R0_BASE1, 21, R1_BASE2+0x10, 1),
224 	SPEC_PULL(98, PUPD_BASE2+0x10, 2, R0_BASE1, 17, R1_BASE2+0x10, 2),
225 	SPEC_PULL(197, PUPD_BASE1+0xc0, 5, R0_BASE1, 13, R1_BASE2+0xc0, 5),
226 	SPEC_PULL(198, PUPD_BASE2+0xc0, 6, R0_BASE1, 14, R1_BASE2+0xc0, 6),
227 	SPEC_PULL(199, PUPD_BASE2+0xc0, 7, R0_BASE1, 11, R1_BASE2+0xc0, 7),
228 	SPEC_PULL(200, PUPD_BASE2+0xc0, 8, R0_BASE1, 10, R1_BASE2+0xc0, 8),
229 	SPEC_PULL(201, PUPD_BASE2+0xc0, 9, R0_BASE1, 13, R1_BASE2+0xc0, 9),
230 	SPEC_PULL(202, PUPD_BASE2+0xc0, 10, R0_BASE1, 12, R1_BASE2+0xc0, 10)
231 };
232 
233 static int spec_pull_set(struct regmap *regmap, unsigned int pin,
234 		unsigned char align, bool isup, unsigned int r1r0)
235 {
236 	unsigned int i;
237 	unsigned int reg_pupd, reg_set_r0, reg_set_r1;
238 	unsigned int reg_rst_r0, reg_rst_r1;
239 	bool find = false;
240 
241 	for (i = 0; i < ARRAY_SIZE(spec_pupd); i++) {
242 		if (pin == spec_pupd[i].pin) {
243 			find = true;
244 			break;
245 		}
246 	}
247 
248 	if (!find)
249 		return -EINVAL;
250 
251 	if (isup)
252 		reg_pupd = spec_pupd[i].pupd_offset + align;
253 	else
254 		reg_pupd = spec_pupd[i].pupd_offset + (align << 1);
255 
256 	regmap_write(regmap, reg_pupd, spec_pupd[i].pupd_bit);
257 
258 	reg_set_r0 = spec_pupd[i].r0_offset + align;
259 	reg_rst_r0 = spec_pupd[i].r0_offset + (align << 1);
260 	reg_set_r1 = spec_pupd[i].r1_offset + align;
261 	reg_rst_r1 = spec_pupd[i].r1_offset + (align << 1);
262 
263 	switch (r1r0) {
264 	case MTK_PUPD_SET_R1R0_00:
265 		regmap_write(regmap, reg_rst_r0, spec_pupd[i].r0_bit);
266 		regmap_write(regmap, reg_rst_r1, spec_pupd[i].r1_bit);
267 		break;
268 	case MTK_PUPD_SET_R1R0_01:
269 		regmap_write(regmap, reg_set_r0, spec_pupd[i].r0_bit);
270 		regmap_write(regmap, reg_rst_r1, spec_pupd[i].r1_bit);
271 		break;
272 	case MTK_PUPD_SET_R1R0_10:
273 		regmap_write(regmap, reg_rst_r0, spec_pupd[i].r0_bit);
274 		regmap_write(regmap, reg_set_r1, spec_pupd[i].r1_bit);
275 		break;
276 	case MTK_PUPD_SET_R1R0_11:
277 		regmap_write(regmap, reg_set_r0, spec_pupd[i].r0_bit);
278 		regmap_write(regmap, reg_set_r1, spec_pupd[i].r1_bit);
279 		break;
280 	default:
281 		return -EINVAL;
282 	}
283 
284 	return 0;
285 }
286 
287 static const struct mtk_pinctrl_devdata mt8135_pinctrl_data = {
288 	.pins = mtk_pins_mt8135,
289 	.npins = ARRAY_SIZE(mtk_pins_mt8135),
290 	.grp_desc = mt8135_drv_grp,
291 	.n_grp_cls = ARRAY_SIZE(mt8135_drv_grp),
292 	.pin_drv_grp = mt8135_pin_drv,
293 	.n_pin_drv_grps = ARRAY_SIZE(mt8135_pin_drv),
294 	.spec_pull_set = spec_pull_set,
295 	.dir_offset = 0x0000,
296 	.ies_offset = 0x0100,
297 	.pullen_offset = 0x0200,
298 	.smt_offset = 0x0300,
299 	.pullsel_offset = 0x0400,
300 	.dout_offset = 0x0800,
301 	.din_offset = 0x0A00,
302 	.pinmux_offset = 0x0C00,
303 	.type1_start = 34,
304 	.type1_end = 149,
305 	.port_shf = 4,
306 	.port_mask = 0xf,
307 	.port_align = 4,
308 	.mode_mask = 0xf,
309 	.mode_per_reg = 5,
310 	.mode_shf = 4,
311 	.eint_hw = {
312 		.port_mask = 7,
313 		.ports     = 6,
314 		.ap_num    = 192,
315 		.db_cnt    = 16,
316 	},
317 };
318 
319 static int mt8135_pinctrl_probe(struct platform_device *pdev)
320 {
321 	return mtk_pctrl_init(pdev, &mt8135_pinctrl_data, NULL);
322 }
323 
324 static const struct of_device_id mt8135_pctrl_match[] = {
325 	{
326 		.compatible = "mediatek,mt8135-pinctrl",
327 	},
328 	{ }
329 };
330 
331 static struct platform_driver mtk_pinctrl_driver = {
332 	.probe = mt8135_pinctrl_probe,
333 	.driver = {
334 		.name = "mediatek-mt8135-pinctrl",
335 		.of_match_table = mt8135_pctrl_match,
336 	},
337 };
338 
339 static int __init mtk_pinctrl_init(void)
340 {
341 	return platform_driver_register(&mtk_pinctrl_driver);
342 }
343 arch_initcall(mtk_pinctrl_init);
344