1 /*
2  * Copyright (c) 2014 MediaTek Inc.
3  * Author: Hongzhou.Yang <hongzhou.yang@mediatek.com>
4  *
5  * This program is free software; you can redistribute it and/or modify
6  * it under the terms of the GNU General Public License version 2 as
7  * published by the Free Software Foundation.
8  *
9  * This program is distributed in the hope that it will be useful,
10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
12  * GNU General Public License for more details.
13  */
14 
15 #include <linux/init.h>
16 #include <linux/platform_device.h>
17 #include <linux/of.h>
18 #include <linux/of_device.h>
19 #include <linux/pinctrl/pinctrl.h>
20 #include <linux/regmap.h>
21 #include <dt-bindings/pinctrl/mt65xx.h>
22 
23 #include "pinctrl-mtk-common.h"
24 #include "pinctrl-mtk-mt8135.h"
25 
26 #define DRV_BASE1				0x500
27 #define DRV_BASE2				0x510
28 #define PUPD_BASE1				0x400
29 #define PUPD_BASE2				0x450
30 #define R0_BASE1				0x4d0
31 #define R1_BASE1				0x200
32 #define R1_BASE2				0x250
33 
34 struct mtk_spec_pull_set {
35 	unsigned char pin;
36 	unsigned char pupd_bit;
37 	unsigned short pupd_offset;
38 	unsigned short r0_offset;
39 	unsigned short r1_offset;
40 	unsigned char r0_bit;
41 	unsigned char r1_bit;
42 };
43 
44 #define SPEC_PULL(_pin, _pupd_offset, _pupd_bit, _r0_offset, \
45 	_r0_bit, _r1_offset, _r1_bit)	\
46 	{	\
47 		.pin = _pin,	\
48 		.pupd_offset = _pupd_offset,	\
49 		.pupd_bit = _pupd_bit,	\
50 		.r0_offset = _r0_offset, \
51 		.r0_bit = _r0_bit, \
52 		.r1_offset = _r1_offset, \
53 		.r1_bit = _r1_bit, \
54 	}
55 
56 static const struct mtk_drv_group_desc mt8135_drv_grp[] =  {
57 	/* E8E4E2 2/4/6/8/10/12/14/16 */
58 	MTK_DRV_GRP(2, 16, 0, 2, 2),
59 	/* E8E4  4/8/12/16 */
60 	MTK_DRV_GRP(4, 16, 1, 2, 4),
61 	/* E4E2  2/4/6/8 */
62 	MTK_DRV_GRP(2, 8, 0, 1, 2),
63 	/* E16E8E4 4/8/12/16/20/24/28/32 */
64 	MTK_DRV_GRP(4, 32, 0, 2, 4)
65 };
66 
67 static const struct mtk_pin_drv_grp mt8135_pin_drv[] = {
68 	MTK_PIN_DRV_GRP(0, DRV_BASE1, 0, 0),
69 	MTK_PIN_DRV_GRP(1, DRV_BASE1, 0, 0),
70 	MTK_PIN_DRV_GRP(2, DRV_BASE1, 0, 0),
71 	MTK_PIN_DRV_GRP(3, DRV_BASE1, 0, 0),
72 	MTK_PIN_DRV_GRP(4, DRV_BASE1, 4, 0),
73 	MTK_PIN_DRV_GRP(5, DRV_BASE1, 8, 0),
74 	MTK_PIN_DRV_GRP(6, DRV_BASE1, 0, 0),
75 	MTK_PIN_DRV_GRP(7, DRV_BASE1, 0, 0),
76 	MTK_PIN_DRV_GRP(8, DRV_BASE1, 0, 0),
77 	MTK_PIN_DRV_GRP(9, DRV_BASE1, 0, 0),
78 
79 	MTK_PIN_DRV_GRP(10, DRV_BASE1, 12, 1),
80 	MTK_PIN_DRV_GRP(11, DRV_BASE1, 12, 1),
81 	MTK_PIN_DRV_GRP(12, DRV_BASE1, 12, 1),
82 	MTK_PIN_DRV_GRP(13, DRV_BASE1, 12, 1),
83 	MTK_PIN_DRV_GRP(14, DRV_BASE1, 12, 1),
84 	MTK_PIN_DRV_GRP(15, DRV_BASE1, 12, 1),
85 	MTK_PIN_DRV_GRP(16, DRV_BASE1, 12, 1),
86 	MTK_PIN_DRV_GRP(17, DRV_BASE1, 16, 1),
87 	MTK_PIN_DRV_GRP(18, DRV_BASE1, 16, 1),
88 	MTK_PIN_DRV_GRP(19, DRV_BASE1, 16, 1),
89 	MTK_PIN_DRV_GRP(20, DRV_BASE1, 16, 1),
90 	MTK_PIN_DRV_GRP(21, DRV_BASE1, 16, 1),
91 	MTK_PIN_DRV_GRP(22, DRV_BASE1, 16, 1),
92 	MTK_PIN_DRV_GRP(23, DRV_BASE1, 16, 1),
93 	MTK_PIN_DRV_GRP(24, DRV_BASE1, 16, 1),
94 	MTK_PIN_DRV_GRP(33, DRV_BASE1, 24, 1),
95 	MTK_PIN_DRV_GRP(34, DRV_BASE2, 12, 2),
96 	MTK_PIN_DRV_GRP(37, DRV_BASE2, 20, 1),
97 	MTK_PIN_DRV_GRP(38, DRV_BASE2, 20, 1),
98 	MTK_PIN_DRV_GRP(39, DRV_BASE2, 20, 1),
99 	MTK_PIN_DRV_GRP(40, DRV_BASE2, 24, 1),
100 	MTK_PIN_DRV_GRP(41, DRV_BASE2, 24, 1),
101 	MTK_PIN_DRV_GRP(42, DRV_BASE2, 24, 1),
102 	MTK_PIN_DRV_GRP(43, DRV_BASE2, 28, 1),
103 	MTK_PIN_DRV_GRP(44, DRV_BASE2, 28, 1),
104 	MTK_PIN_DRV_GRP(45, DRV_BASE2, 28, 1),
105 	MTK_PIN_DRV_GRP(46, DRV_BASE2, 28, 1),
106 	MTK_PIN_DRV_GRP(47, DRV_BASE2, 28, 1),
107 
108 	MTK_PIN_DRV_GRP(49, DRV_BASE2+0x10, 0, 1),
109 	MTK_PIN_DRV_GRP(50, DRV_BASE2+0x10, 4, 1),
110 	MTK_PIN_DRV_GRP(51, DRV_BASE2+0x10, 8, 1),
111 	MTK_PIN_DRV_GRP(52, DRV_BASE2+0x10, 12, 2),
112 	MTK_PIN_DRV_GRP(53, DRV_BASE2+0x10, 16, 1),
113 	MTK_PIN_DRV_GRP(54, DRV_BASE2+0x10, 20, 1),
114 	MTK_PIN_DRV_GRP(55, DRV_BASE2+0x10, 24, 1),
115 	MTK_PIN_DRV_GRP(56, DRV_BASE2+0x10, 28, 1),
116 
117 	MTK_PIN_DRV_GRP(57, DRV_BASE2+0x20, 0, 1),
118 	MTK_PIN_DRV_GRP(58, DRV_BASE2+0x20, 0, 1),
119 	MTK_PIN_DRV_GRP(59, DRV_BASE2+0x20, 0, 1),
120 	MTK_PIN_DRV_GRP(60, DRV_BASE2+0x20, 0, 1),
121 	MTK_PIN_DRV_GRP(61, DRV_BASE2+0x20, 0, 1),
122 	MTK_PIN_DRV_GRP(62, DRV_BASE2+0x20, 0, 1),
123 	MTK_PIN_DRV_GRP(63, DRV_BASE2+0x20, 4, 1),
124 	MTK_PIN_DRV_GRP(64, DRV_BASE2+0x20, 8, 1),
125 	MTK_PIN_DRV_GRP(65, DRV_BASE2+0x20, 12, 1),
126 	MTK_PIN_DRV_GRP(66, DRV_BASE2+0x20, 16, 1),
127 	MTK_PIN_DRV_GRP(67, DRV_BASE2+0x20, 20, 1),
128 	MTK_PIN_DRV_GRP(68, DRV_BASE2+0x20, 24, 1),
129 	MTK_PIN_DRV_GRP(69, DRV_BASE2+0x20, 28, 1),
130 
131 	MTK_PIN_DRV_GRP(70, DRV_BASE2+0x30, 0, 1),
132 	MTK_PIN_DRV_GRP(71, DRV_BASE2+0x30, 4, 1),
133 	MTK_PIN_DRV_GRP(72, DRV_BASE2+0x30, 8, 1),
134 	MTK_PIN_DRV_GRP(73, DRV_BASE2+0x30, 12, 1),
135 	MTK_PIN_DRV_GRP(74, DRV_BASE2+0x30, 16, 1),
136 	MTK_PIN_DRV_GRP(75, DRV_BASE2+0x30, 20, 1),
137 	MTK_PIN_DRV_GRP(76, DRV_BASE2+0x30, 24, 1),
138 	MTK_PIN_DRV_GRP(77, DRV_BASE2+0x30, 28, 3),
139 	MTK_PIN_DRV_GRP(78, DRV_BASE2+0x30, 28, 3),
140 
141 	MTK_PIN_DRV_GRP(79, DRV_BASE2+0x40, 0, 3),
142 	MTK_PIN_DRV_GRP(80, DRV_BASE2+0x40, 4, 3),
143 
144 	MTK_PIN_DRV_GRP(81, DRV_BASE2+0x30, 28, 3),
145 	MTK_PIN_DRV_GRP(82, DRV_BASE2+0x30, 28, 3),
146 
147 	MTK_PIN_DRV_GRP(83, DRV_BASE2+0x40, 8, 3),
148 	MTK_PIN_DRV_GRP(84, DRV_BASE2+0x40, 8, 3),
149 	MTK_PIN_DRV_GRP(85, DRV_BASE2+0x40, 12, 3),
150 	MTK_PIN_DRV_GRP(86, DRV_BASE2+0x40, 16, 3),
151 	MTK_PIN_DRV_GRP(87, DRV_BASE2+0x40, 8, 3),
152 	MTK_PIN_DRV_GRP(88, DRV_BASE2+0x40, 8, 3),
153 
154 	MTK_PIN_DRV_GRP(89, DRV_BASE2+0x50, 12, 0),
155 	MTK_PIN_DRV_GRP(90, DRV_BASE2+0x50, 12, 0),
156 	MTK_PIN_DRV_GRP(91, DRV_BASE2+0x50, 12, 0),
157 	MTK_PIN_DRV_GRP(92, DRV_BASE2+0x50, 12, 0),
158 	MTK_PIN_DRV_GRP(93, DRV_BASE2+0x50, 12, 0),
159 	MTK_PIN_DRV_GRP(94, DRV_BASE2+0x50, 12, 0),
160 	MTK_PIN_DRV_GRP(95, DRV_BASE2+0x50, 12, 0),
161 
162 	MTK_PIN_DRV_GRP(96, DRV_BASE1+0xb0, 28, 0),
163 
164 	MTK_PIN_DRV_GRP(97, DRV_BASE2+0x50, 12, 0),
165 	MTK_PIN_DRV_GRP(98, DRV_BASE2+0x50, 16, 0),
166 	MTK_PIN_DRV_GRP(99, DRV_BASE2+0x50, 20, 1),
167 	MTK_PIN_DRV_GRP(102, DRV_BASE2+0x50, 24, 1),
168 	MTK_PIN_DRV_GRP(103, DRV_BASE2+0x50, 28, 1),
169 
170 
171 	MTK_PIN_DRV_GRP(104, DRV_BASE2+0x60, 0, 1),
172 	MTK_PIN_DRV_GRP(105, DRV_BASE2+0x60, 4, 1),
173 	MTK_PIN_DRV_GRP(106, DRV_BASE2+0x60, 4, 1),
174 	MTK_PIN_DRV_GRP(107, DRV_BASE2+0x60, 4, 1),
175 	MTK_PIN_DRV_GRP(108, DRV_BASE2+0x60, 4, 1),
176 	MTK_PIN_DRV_GRP(109, DRV_BASE2+0x60, 8, 2),
177 	MTK_PIN_DRV_GRP(110, DRV_BASE2+0x60, 12, 2),
178 	MTK_PIN_DRV_GRP(111, DRV_BASE2+0x60, 16, 2),
179 	MTK_PIN_DRV_GRP(112, DRV_BASE2+0x60, 20, 2),
180 	MTK_PIN_DRV_GRP(113, DRV_BASE2+0x60, 24, 2),
181 	MTK_PIN_DRV_GRP(114, DRV_BASE2+0x60, 28, 2),
182 
183 	MTK_PIN_DRV_GRP(115, DRV_BASE2+0x70, 0, 2),
184 	MTK_PIN_DRV_GRP(116, DRV_BASE2+0x70, 4, 2),
185 	MTK_PIN_DRV_GRP(117, DRV_BASE2+0x70, 8, 2),
186 	MTK_PIN_DRV_GRP(118, DRV_BASE2+0x70, 12, 2),
187 	MTK_PIN_DRV_GRP(119, DRV_BASE2+0x70, 16, 2),
188 	MTK_PIN_DRV_GRP(120, DRV_BASE2+0x70, 20, 2),
189 
190 	MTK_PIN_DRV_GRP(181, DRV_BASE1+0xa0, 12, 1),
191 	MTK_PIN_DRV_GRP(182, DRV_BASE1+0xa0, 16, 1),
192 	MTK_PIN_DRV_GRP(183, DRV_BASE1+0xa0, 20, 1),
193 	MTK_PIN_DRV_GRP(184, DRV_BASE1+0xa0, 24, 1),
194 	MTK_PIN_DRV_GRP(185, DRV_BASE1+0xa0, 28, 1),
195 
196 	MTK_PIN_DRV_GRP(186, DRV_BASE1+0xb0, 0, 2),
197 	MTK_PIN_DRV_GRP(187, DRV_BASE1+0xb0, 0, 2),
198 	MTK_PIN_DRV_GRP(188, DRV_BASE1+0xb0, 0, 2),
199 	MTK_PIN_DRV_GRP(189, DRV_BASE1+0xb0, 0, 2),
200 	MTK_PIN_DRV_GRP(190, DRV_BASE1+0xb0, 4, 1),
201 	MTK_PIN_DRV_GRP(191, DRV_BASE1+0xb0, 8, 1),
202 	MTK_PIN_DRV_GRP(192, DRV_BASE1+0xb0, 12, 1),
203 
204 	MTK_PIN_DRV_GRP(197, DRV_BASE1+0xb0, 16, 0),
205 	MTK_PIN_DRV_GRP(198, DRV_BASE1+0xb0, 16, 0),
206 	MTK_PIN_DRV_GRP(199, DRV_BASE1+0xb0, 20, 0),
207 	MTK_PIN_DRV_GRP(200, DRV_BASE1+0xb0, 24, 0),
208 	MTK_PIN_DRV_GRP(201, DRV_BASE1+0xb0, 16, 0),
209 	MTK_PIN_DRV_GRP(202, DRV_BASE1+0xb0, 16, 0)
210 };
211 
212 static const struct mtk_spec_pull_set spec_pupd[] = {
213 	SPEC_PULL(0, PUPD_BASE1, 0, R0_BASE1, 9, R1_BASE1, 0),
214 	SPEC_PULL(1, PUPD_BASE1, 1, R0_BASE1, 8, R1_BASE1, 1),
215 	SPEC_PULL(2, PUPD_BASE1, 2, R0_BASE1, 7, R1_BASE1, 2),
216 	SPEC_PULL(3, PUPD_BASE1, 3, R0_BASE1, 6, R1_BASE1, 3),
217 	SPEC_PULL(4, PUPD_BASE1, 4, R0_BASE1, 1, R1_BASE1, 4),
218 	SPEC_PULL(5, PUPD_BASE1, 5, R0_BASE1, 0, R1_BASE1, 5),
219 	SPEC_PULL(6, PUPD_BASE1, 6, R0_BASE1, 5, R1_BASE1, 6),
220 	SPEC_PULL(7, PUPD_BASE1, 7, R0_BASE1, 4, R1_BASE1, 7),
221 	SPEC_PULL(8, PUPD_BASE1, 8, R0_BASE1, 3, R1_BASE1, 8),
222 	SPEC_PULL(9, PUPD_BASE1, 9, R0_BASE1, 2, R1_BASE1, 9),
223 	SPEC_PULL(89, PUPD_BASE2, 9, R0_BASE1, 18, R1_BASE2, 9),
224 	SPEC_PULL(90, PUPD_BASE2, 10, R0_BASE1, 19, R1_BASE2, 10),
225 	SPEC_PULL(91, PUPD_BASE2, 11, R0_BASE1, 23, R1_BASE2, 11),
226 	SPEC_PULL(92, PUPD_BASE2, 12, R0_BASE1, 24, R1_BASE2, 12),
227 	SPEC_PULL(93, PUPD_BASE2, 13, R0_BASE1, 25, R1_BASE2, 13),
228 	SPEC_PULL(94, PUPD_BASE2, 14, R0_BASE1, 22, R1_BASE2, 14),
229 	SPEC_PULL(95, PUPD_BASE2, 15, R0_BASE1, 20, R1_BASE2, 15),
230 	SPEC_PULL(96, PUPD_BASE2+0x10, 0, R0_BASE1, 16, R1_BASE2+0x10, 0),
231 	SPEC_PULL(97, PUPD_BASE2+0x10, 1, R0_BASE1, 21, R1_BASE2+0x10, 1),
232 	SPEC_PULL(98, PUPD_BASE2+0x10, 2, R0_BASE1, 17, R1_BASE2+0x10, 2),
233 	SPEC_PULL(197, PUPD_BASE1+0xc0, 5, R0_BASE1, 13, R1_BASE2+0xc0, 5),
234 	SPEC_PULL(198, PUPD_BASE2+0xc0, 6, R0_BASE1, 14, R1_BASE2+0xc0, 6),
235 	SPEC_PULL(199, PUPD_BASE2+0xc0, 7, R0_BASE1, 11, R1_BASE2+0xc0, 7),
236 	SPEC_PULL(200, PUPD_BASE2+0xc0, 8, R0_BASE1, 10, R1_BASE2+0xc0, 8),
237 	SPEC_PULL(201, PUPD_BASE2+0xc0, 9, R0_BASE1, 13, R1_BASE2+0xc0, 9),
238 	SPEC_PULL(202, PUPD_BASE2+0xc0, 10, R0_BASE1, 12, R1_BASE2+0xc0, 10)
239 };
240 
241 static int spec_pull_set(struct regmap *regmap, unsigned int pin,
242 		unsigned char align, bool isup, unsigned int r1r0)
243 {
244 	unsigned int i;
245 	unsigned int reg_pupd, reg_set_r0, reg_set_r1;
246 	unsigned int reg_rst_r0, reg_rst_r1;
247 	bool find = false;
248 
249 	for (i = 0; i < ARRAY_SIZE(spec_pupd); i++) {
250 		if (pin == spec_pupd[i].pin) {
251 			find = true;
252 			break;
253 		}
254 	}
255 
256 	if (!find)
257 		return -EINVAL;
258 
259 	if (isup)
260 		reg_pupd = spec_pupd[i].pupd_offset + align;
261 	else
262 		reg_pupd = spec_pupd[i].pupd_offset + (align << 1);
263 
264 	regmap_write(regmap, reg_pupd, spec_pupd[i].pupd_bit);
265 
266 	reg_set_r0 = spec_pupd[i].r0_offset + align;
267 	reg_rst_r0 = spec_pupd[i].r0_offset + (align << 1);
268 	reg_set_r1 = spec_pupd[i].r1_offset + align;
269 	reg_rst_r1 = spec_pupd[i].r1_offset + (align << 1);
270 
271 	switch (r1r0) {
272 	case MTK_PUPD_SET_R1R0_00:
273 		regmap_write(regmap, reg_rst_r0, spec_pupd[i].r0_bit);
274 		regmap_write(regmap, reg_rst_r1, spec_pupd[i].r1_bit);
275 		break;
276 	case MTK_PUPD_SET_R1R0_01:
277 		regmap_write(regmap, reg_set_r0, spec_pupd[i].r0_bit);
278 		regmap_write(regmap, reg_rst_r1, spec_pupd[i].r1_bit);
279 		break;
280 	case MTK_PUPD_SET_R1R0_10:
281 		regmap_write(regmap, reg_rst_r0, spec_pupd[i].r0_bit);
282 		regmap_write(regmap, reg_set_r1, spec_pupd[i].r1_bit);
283 		break;
284 	case MTK_PUPD_SET_R1R0_11:
285 		regmap_write(regmap, reg_set_r0, spec_pupd[i].r0_bit);
286 		regmap_write(regmap, reg_set_r1, spec_pupd[i].r1_bit);
287 		break;
288 	default:
289 		return -EINVAL;
290 	}
291 
292 	return 0;
293 }
294 
295 static const struct mtk_pinctrl_devdata mt8135_pinctrl_data = {
296 	.pins = mtk_pins_mt8135,
297 	.npins = ARRAY_SIZE(mtk_pins_mt8135),
298 	.grp_desc = mt8135_drv_grp,
299 	.n_grp_cls = ARRAY_SIZE(mt8135_drv_grp),
300 	.pin_drv_grp = mt8135_pin_drv,
301 	.n_pin_drv_grps = ARRAY_SIZE(mt8135_pin_drv),
302 	.spec_pull_set = spec_pull_set,
303 	.dir_offset = 0x0000,
304 	.ies_offset = 0x0100,
305 	.pullen_offset = 0x0200,
306 	.smt_offset = 0x0300,
307 	.pullsel_offset = 0x0400,
308 	.dout_offset = 0x0800,
309 	.din_offset = 0x0A00,
310 	.pinmux_offset = 0x0C00,
311 	.type1_start = 34,
312 	.type1_end = 149,
313 	.port_shf = 4,
314 	.port_mask = 0xf,
315 	.port_align = 4,
316 	.eint_hw = {
317 		.port_mask = 7,
318 		.ports     = 6,
319 		.ap_num    = 192,
320 		.db_cnt    = 16,
321 	},
322 };
323 
324 static int mt8135_pinctrl_probe(struct platform_device *pdev)
325 {
326 	return mtk_pctrl_init(pdev, &mt8135_pinctrl_data, NULL);
327 }
328 
329 static const struct of_device_id mt8135_pctrl_match[] = {
330 	{
331 		.compatible = "mediatek,mt8135-pinctrl",
332 	},
333 	{ }
334 };
335 
336 static struct platform_driver mtk_pinctrl_driver = {
337 	.probe = mt8135_pinctrl_probe,
338 	.driver = {
339 		.name = "mediatek-mt8135-pinctrl",
340 		.of_match_table = mt8135_pctrl_match,
341 	},
342 };
343 
344 static int __init mtk_pinctrl_init(void)
345 {
346 	return platform_driver_register(&mtk_pinctrl_driver);
347 }
348 arch_initcall(mtk_pinctrl_init);
349