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e7ae4cf2 DW |
1 | // SPDX-License-Identifier: GPL-2.0+ |
2 | /* | |
3 | * (C) Copyright 2019 Rockchip Electronics Co., Ltd | |
4 | */ | |
5 | ||
6 | #include <common.h> | |
7 | #include <dm.h> | |
f7ae49fc | 8 | #include <log.h> |
e7ae4cf2 DW |
9 | #include <dm/pinctrl.h> |
10 | #include <regmap.h> | |
11 | #include <syscon.h> | |
cd93d625 | 12 | #include <linux/bitops.h> |
e7ae4cf2 DW |
13 | |
14 | #include "pinctrl-rockchip.h" | |
15 | ||
16 | static struct rockchip_mux_recalced_data rk3328_mux_recalced_data[] = { | |
17 | { | |
18 | .num = 2, | |
19 | .pin = 12, | |
20 | .reg = 0x24, | |
21 | .bit = 8, | |
22 | .mask = 0x3 | |
23 | }, { | |
24 | .num = 2, | |
25 | .pin = 15, | |
26 | .reg = 0x28, | |
27 | .bit = 0, | |
28 | .mask = 0x7 | |
29 | }, { | |
30 | .num = 2, | |
31 | .pin = 23, | |
32 | .reg = 0x30, | |
33 | .bit = 14, | |
34 | .mask = 0x3 | |
35 | }, | |
36 | }; | |
37 | ||
38 | static struct rockchip_mux_route_data rk3328_mux_route_data[] = { | |
39 | { | |
40 | /* uart2dbg_rxm0 */ | |
41 | .bank_num = 1, | |
42 | .pin = 1, | |
43 | .func = 2, | |
44 | .route_offset = 0x50, | |
45 | .route_val = BIT(16) | BIT(16 + 1), | |
46 | }, { | |
47 | /* uart2dbg_rxm1 */ | |
48 | .bank_num = 2, | |
49 | .pin = 1, | |
50 | .func = 1, | |
51 | .route_offset = 0x50, | |
52 | .route_val = BIT(16) | BIT(16 + 1) | BIT(0), | |
53 | }, { | |
54 | /* gmac-m1_rxd0 */ | |
55 | .bank_num = 1, | |
56 | .pin = 11, | |
57 | .func = 2, | |
58 | .route_offset = 0x50, | |
59 | .route_val = BIT(16 + 2) | BIT(2), | |
60 | }, { | |
61 | /* gmac-m1-optimized_rxd3 */ | |
62 | .bank_num = 1, | |
63 | .pin = 14, | |
64 | .func = 2, | |
65 | .route_offset = 0x50, | |
66 | .route_val = BIT(16 + 10) | BIT(10), | |
67 | }, { | |
68 | /* pdm_sdi0m0 */ | |
69 | .bank_num = 2, | |
70 | .pin = 19, | |
71 | .func = 2, | |
72 | .route_offset = 0x50, | |
73 | .route_val = BIT(16 + 3), | |
74 | }, { | |
75 | /* pdm_sdi0m1 */ | |
76 | .bank_num = 1, | |
77 | .pin = 23, | |
78 | .func = 3, | |
79 | .route_offset = 0x50, | |
80 | .route_val = BIT(16 + 3) | BIT(3), | |
81 | }, { | |
82 | /* spi_rxdm2 */ | |
83 | .bank_num = 3, | |
84 | .pin = 2, | |
85 | .func = 4, | |
86 | .route_offset = 0x50, | |
87 | .route_val = BIT(16 + 4) | BIT(16 + 5) | BIT(5), | |
88 | }, { | |
89 | /* i2s2_sdim0 */ | |
90 | .bank_num = 1, | |
91 | .pin = 24, | |
92 | .func = 1, | |
93 | .route_offset = 0x50, | |
94 | .route_val = BIT(16 + 6), | |
95 | }, { | |
96 | /* i2s2_sdim1 */ | |
97 | .bank_num = 3, | |
98 | .pin = 2, | |
99 | .func = 6, | |
100 | .route_offset = 0x50, | |
101 | .route_val = BIT(16 + 6) | BIT(6), | |
102 | }, { | |
103 | /* card_iom1 */ | |
104 | .bank_num = 2, | |
105 | .pin = 22, | |
106 | .func = 3, | |
107 | .route_offset = 0x50, | |
108 | .route_val = BIT(16 + 7) | BIT(7), | |
109 | }, { | |
110 | /* tsp_d5m1 */ | |
111 | .bank_num = 2, | |
112 | .pin = 16, | |
113 | .func = 3, | |
114 | .route_offset = 0x50, | |
115 | .route_val = BIT(16 + 8) | BIT(8), | |
116 | }, { | |
117 | /* cif_data5m1 */ | |
118 | .bank_num = 2, | |
119 | .pin = 16, | |
120 | .func = 4, | |
121 | .route_offset = 0x50, | |
122 | .route_val = BIT(16 + 9) | BIT(9), | |
123 | }, | |
124 | }; | |
125 | ||
54e75702 DW |
126 | static int rk3328_set_mux(struct rockchip_pin_bank *bank, int pin, int mux) |
127 | { | |
128 | struct rockchip_pinctrl_priv *priv = bank->priv; | |
129 | int iomux_num = (pin / 8); | |
130 | struct regmap *regmap; | |
131 | int reg, ret, mask, mux_type; | |
132 | u8 bit; | |
133 | u32 data, route_reg, route_val; | |
134 | ||
135 | regmap = (bank->iomux[iomux_num].type & IOMUX_SOURCE_PMU) | |
136 | ? priv->regmap_pmu : priv->regmap_base; | |
137 | ||
138 | /* get basic quadrupel of mux registers and the correct reg inside */ | |
139 | mux_type = bank->iomux[iomux_num].type; | |
140 | reg = bank->iomux[iomux_num].offset; | |
141 | reg += rockchip_get_mux_data(mux_type, pin, &bit, &mask); | |
142 | ||
143 | if (bank->recalced_mask & BIT(pin)) | |
144 | rockchip_get_recalced_mux(bank, pin, ®, &bit, &mask); | |
145 | ||
146 | if (bank->route_mask & BIT(pin)) { | |
147 | if (rockchip_get_mux_route(bank, pin, mux, &route_reg, | |
148 | &route_val)) { | |
149 | ret = regmap_write(regmap, route_reg, route_val); | |
150 | if (ret) | |
151 | return ret; | |
152 | } | |
153 | } | |
154 | ||
155 | data = (mask << (bit + 16)); | |
156 | data |= (mux & mask) << bit; | |
157 | ret = regmap_write(regmap, reg, data); | |
158 | ||
159 | return ret; | |
160 | } | |
161 | ||
e7ae4cf2 DW |
162 | #define RK3328_PULL_OFFSET 0x100 |
163 | ||
164 | static void rk3328_calc_pull_reg_and_bit(struct rockchip_pin_bank *bank, | |
165 | int pin_num, struct regmap **regmap, | |
166 | int *reg, u8 *bit) | |
167 | { | |
168 | struct rockchip_pinctrl_priv *priv = bank->priv; | |
169 | ||
170 | *regmap = priv->regmap_base; | |
171 | *reg = RK3328_PULL_OFFSET; | |
172 | *reg += bank->bank_num * ROCKCHIP_PULL_BANK_STRIDE; | |
173 | *reg += ((pin_num / ROCKCHIP_PULL_PINS_PER_REG) * 4); | |
174 | ||
175 | *bit = (pin_num % ROCKCHIP_PULL_PINS_PER_REG); | |
176 | *bit *= ROCKCHIP_PULL_BITS_PER_PIN; | |
177 | } | |
178 | ||
743a7737 DW |
179 | static int rk3328_set_pull(struct rockchip_pin_bank *bank, |
180 | int pin_num, int pull) | |
181 | { | |
182 | struct regmap *regmap; | |
183 | int reg, ret; | |
184 | u8 bit, type; | |
185 | u32 data; | |
186 | ||
187 | if (pull == PIN_CONFIG_BIAS_PULL_PIN_DEFAULT) | |
188 | return -ENOTSUPP; | |
189 | ||
190 | rk3328_calc_pull_reg_and_bit(bank, pin_num, ®map, ®, &bit); | |
191 | type = bank->pull_type[pin_num / 8]; | |
192 | ret = rockchip_translate_pull_value(type, pull); | |
193 | if (ret < 0) { | |
194 | debug("unsupported pull setting %d\n", pull); | |
195 | return ret; | |
196 | } | |
197 | ||
198 | /* enable the write to the equivalent lower bits */ | |
199 | data = ((1 << ROCKCHIP_PULL_BITS_PER_PIN) - 1) << (bit + 16); | |
200 | data |= (ret << bit); | |
201 | ret = regmap_write(regmap, reg, data); | |
202 | ||
203 | return ret; | |
204 | } | |
205 | ||
e7ae4cf2 DW |
206 | #define RK3328_DRV_GRF_OFFSET 0x200 |
207 | ||
208 | static void rk3328_calc_drv_reg_and_bit(struct rockchip_pin_bank *bank, | |
209 | int pin_num, struct regmap **regmap, | |
210 | int *reg, u8 *bit) | |
211 | { | |
212 | struct rockchip_pinctrl_priv *priv = bank->priv; | |
213 | ||
214 | *regmap = priv->regmap_base; | |
215 | *reg = RK3328_DRV_GRF_OFFSET; | |
216 | *reg += bank->bank_num * ROCKCHIP_DRV_BANK_STRIDE; | |
217 | *reg += ((pin_num / ROCKCHIP_DRV_PINS_PER_REG) * 4); | |
218 | ||
219 | *bit = (pin_num % ROCKCHIP_DRV_PINS_PER_REG); | |
220 | *bit *= ROCKCHIP_DRV_BITS_PER_PIN; | |
221 | } | |
222 | ||
625ab11f DW |
223 | static int rk3328_set_drive(struct rockchip_pin_bank *bank, |
224 | int pin_num, int strength) | |
225 | { | |
226 | struct regmap *regmap; | |
227 | int reg, ret; | |
228 | u32 data; | |
229 | u8 bit; | |
230 | int type = bank->drv[pin_num / 8].drv_type; | |
231 | ||
232 | rk3328_calc_drv_reg_and_bit(bank, pin_num, ®map, ®, &bit); | |
233 | ret = rockchip_translate_drive_value(type, strength); | |
234 | if (ret < 0) { | |
235 | debug("unsupported driver strength %d\n", strength); | |
236 | return ret; | |
237 | } | |
238 | ||
239 | /* enable the write to the equivalent lower bits */ | |
240 | data = ((1 << ROCKCHIP_DRV_BITS_PER_PIN) - 1) << (bit + 16); | |
241 | data |= (ret << bit); | |
242 | ret = regmap_write(regmap, reg, data); | |
243 | ||
244 | return ret; | |
245 | } | |
246 | ||
e7ae4cf2 DW |
247 | #define RK3328_SCHMITT_BITS_PER_PIN 1 |
248 | #define RK3328_SCHMITT_PINS_PER_REG 16 | |
249 | #define RK3328_SCHMITT_BANK_STRIDE 8 | |
250 | #define RK3328_SCHMITT_GRF_OFFSET 0x380 | |
251 | ||
252 | static int rk3328_calc_schmitt_reg_and_bit(struct rockchip_pin_bank *bank, | |
253 | int pin_num, | |
254 | struct regmap **regmap, | |
255 | int *reg, u8 *bit) | |
256 | { | |
257 | struct rockchip_pinctrl_priv *priv = bank->priv; | |
258 | ||
259 | *regmap = priv->regmap_base; | |
260 | *reg = RK3328_SCHMITT_GRF_OFFSET; | |
261 | ||
262 | *reg += bank->bank_num * RK3328_SCHMITT_BANK_STRIDE; | |
263 | *reg += ((pin_num / RK3328_SCHMITT_PINS_PER_REG) * 4); | |
264 | *bit = pin_num % RK3328_SCHMITT_PINS_PER_REG; | |
265 | ||
266 | return 0; | |
267 | } | |
268 | ||
79d16e45 DW |
269 | static int rk3328_set_schmitt(struct rockchip_pin_bank *bank, |
270 | int pin_num, int enable) | |
271 | { | |
272 | struct regmap *regmap; | |
273 | int reg; | |
274 | u8 bit; | |
275 | u32 data; | |
276 | ||
277 | rk3328_calc_schmitt_reg_and_bit(bank, pin_num, ®map, ®, &bit); | |
278 | /* enable the write to the equivalent lower bits */ | |
279 | data = BIT(bit + 16) | (enable << bit); | |
280 | ||
281 | return regmap_write(regmap, reg, data); | |
282 | } | |
283 | ||
e7ae4cf2 DW |
284 | static struct rockchip_pin_bank rk3328_pin_banks[] = { |
285 | PIN_BANK_IOMUX_FLAGS(0, 32, "gpio0", 0, 0, 0, 0), | |
286 | PIN_BANK_IOMUX_FLAGS(1, 32, "gpio1", 0, 0, 0, 0), | |
287 | PIN_BANK_IOMUX_FLAGS(2, 32, "gpio2", 0, | |
288 | IOMUX_WIDTH_3BIT, | |
289 | IOMUX_WIDTH_3BIT, | |
290 | 0), | |
291 | PIN_BANK_IOMUX_FLAGS(3, 32, "gpio3", | |
292 | IOMUX_WIDTH_3BIT, | |
293 | IOMUX_WIDTH_3BIT, | |
294 | 0, | |
295 | 0), | |
296 | }; | |
297 | ||
298 | static struct rockchip_pin_ctrl rk3328_pin_ctrl = { | |
8541beb8 DW |
299 | .pin_banks = rk3328_pin_banks, |
300 | .nr_banks = ARRAY_SIZE(rk3328_pin_banks), | |
8541beb8 DW |
301 | .grf_mux_offset = 0x0, |
302 | .iomux_recalced = rk3328_mux_recalced_data, | |
303 | .niomux_recalced = ARRAY_SIZE(rk3328_mux_recalced_data), | |
304 | .iomux_routes = rk3328_mux_route_data, | |
305 | .niomux_routes = ARRAY_SIZE(rk3328_mux_route_data), | |
54e75702 | 306 | .set_mux = rk3328_set_mux, |
743a7737 | 307 | .set_pull = rk3328_set_pull, |
625ab11f | 308 | .set_drive = rk3328_set_drive, |
79d16e45 | 309 | .set_schmitt = rk3328_set_schmitt, |
e7ae4cf2 DW |
310 | }; |
311 | ||
312 | static const struct udevice_id rk3328_pinctrl_ids[] = { | |
313 | { | |
314 | .compatible = "rockchip,rk3328-pinctrl", | |
315 | .data = (ulong)&rk3328_pin_ctrl | |
316 | }, | |
317 | { } | |
318 | }; | |
319 | ||
e3e2470f | 320 | U_BOOT_DRIVER(rockchip_rk3328_pinctrl) = { |
e7ae4cf2 DW |
321 | .name = "rockchip_rk3328_pinctrl", |
322 | .id = UCLASS_PINCTRL, | |
323 | .of_match = rk3328_pinctrl_ids, | |
41575d8e | 324 | .priv_auto = sizeof(struct rockchip_pinctrl_priv), |
e7ae4cf2 DW |
325 | .ops = &rockchip_pinctrl_ops, |
326 | #if !CONFIG_IS_ENABLED(OF_PLATDATA) | |
327 | .bind = dm_scan_fdt_dev, | |
328 | #endif | |
329 | .probe = rockchip_pinctrl_probe, | |
330 | }; |