1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3  * Copyright (C) ASPEED Technology Inc.
4  */
5 
6 #include <common.h>
7 #include <dm.h>
8 #include <errno.h>
9 #include <asm/io.h>
10 #include <linux/bitops.h>
11 #include <asm/arch/pinctrl.h>
12 #include <asm/arch/scu_ast2600.h>
13 #include <dm/pinctrl.h>
14 #include "pinctrl-aspeed.h"
15 /*
16  * This driver works with very simple configuration that has the same name
17  * for group and function. This way it is compatible with the Linux Kernel
18  * driver.
19  */
20 
21 struct ast2600_pinctrl_priv {
22 	struct ast2600_scu *scu;
23 };
24 
25 static int ast2600_pinctrl_probe(struct udevice *dev)
26 {
27 	struct ast2600_pinctrl_priv *priv = dev_get_priv(dev);
28 	struct udevice *clk_dev;
29 	int ret = 0;
30 
31 	/* find SCU base address from clock device */
32 	ret = uclass_get_device_by_driver(UCLASS_CLK, DM_GET_DRIVER(aspeed_scu),
33                                           &clk_dev);
34     if (ret) {
35             debug("clock device not found\n");
36             return ret;
37     }
38 
39 	priv->scu = devfdt_get_addr_ptr(clk_dev);
40 	if (IS_ERR(priv->scu)) {
41 	        debug("%s(): can't get SCU\n", __func__);
42 	        return PTR_ERR(priv->scu);
43 	}
44 
45 	return 0;
46 }
47 
48 static struct aspeed_sig_desc i2c1_link[] = {
49 	{ 0x418, GENMASK(9, 8), 1 },
50 	{ 0x4B8, GENMASK(9, 8), 0 },
51 };
52 
53 static struct aspeed_sig_desc i2c2_link[] = {
54 	{ 0x418, GENMASK(11, 10), 1 },
55 	{ 0x4B8, GENMASK(11, 10), 0 },
56 };
57 
58 static struct aspeed_sig_desc i2c3_link[] = {
59 	{ 0x418, GENMASK(13, 12), 1 },
60 	{ 0x4B8, GENMASK(13, 12), 0 },
61 };
62 
63 static struct aspeed_sig_desc i2c4_link[] = {
64 	{ 0x418, GENMASK(15, 14), 1 },
65 	{ 0x4B8, GENMASK(15, 14), 0 },
66 };
67 
68 static struct aspeed_sig_desc i2c5_link[] = {
69 	{ 0x418, GENMASK(17, 16), 0 },
70 };
71 
72 static struct aspeed_sig_desc i2c6_link[] = {
73 	{ 0x418, GENMASK(19, 18), 0 },
74 };
75 
76 static struct aspeed_sig_desc i2c7_link[] = {
77 	{ 0x418, GENMASK(21, 20), 0 },
78 };
79 
80 static struct aspeed_sig_desc i2c8_link[] = {
81 	{ 0x418, GENMASK(23, 22), 0 },
82 };
83 
84 static struct aspeed_sig_desc i2c9_link[] = {
85 	{ 0x418, GENMASK(25, 24), 0 },
86 };
87 
88 static struct aspeed_sig_desc i2c10_link[] = {
89 	{ 0x418, GENMASK(27, 26), 0 },
90 };
91 
92 static struct aspeed_sig_desc i2c11_link[] = {
93 	{ 0x410, GENMASK(1, 0), 1 },
94 	{ 0x4B0, GENMASK(1, 0), 0 },
95 };
96 
97 static struct aspeed_sig_desc i2c12_link[] = {
98 	{ 0x410, GENMASK(3, 2), 1 },
99 	{ 0x4B0, GENMASK(3, 2), 0 },
100 };
101 
102 static struct aspeed_sig_desc i2c13_link[] = {
103 	{ 0x410, GENMASK(5, 4), 1 },
104 	{ 0x4B0, GENMASK(5, 4), 0 },
105 };
106 
107 static struct aspeed_sig_desc i2c14_link[] = {
108 	{ 0x410, GENMASK(7, 6), 1 },
109 	{ 0x4B0, GENMASK(7, 6), 0 },
110 };
111 
112 static struct aspeed_sig_desc i2c15_link[] = {
113 	{ 0x414, GENMASK(29, 28), 1 },
114 	{ 0x4B4, GENMASK(29, 28), 0 },
115 };
116 
117 static struct aspeed_sig_desc i2c16_link[] = {
118 	{ 0x414, GENMASK(31, 30), 1 },
119 	{ 0x4B4, GENMASK(31, 30), 0 },
120 };
121 
122 
123 static struct aspeed_sig_desc mac1_link[] = {
124 	{ 0x410, BIT(4), 0 },
125 #ifndef CONFIG_FPGA_ASPEED
126 	{ 0x470, BIT(4), 1 },
127 #endif
128 };
129 
130 static struct aspeed_sig_desc mac2_link[] = {
131 	{ 0x410, BIT(5), 0	},
132 	{ 0x470, BIT(5), 1 },
133 };
134 
135 static struct aspeed_sig_desc mac3_link[] = {
136 	{ 0x410, BIT(6), 0		},
137 	{ 0x470, BIT(6), 1      	},
138 };
139 
140 static struct aspeed_sig_desc mac4_link[] = {
141 	{ 0x410, BIT(7), 0		},
142 	{ 0x470, BIT(7), 1		},
143 };
144 
145 
146 static struct aspeed_sig_desc rgmii1[] = {
147 #ifndef CONFIG_FPGA_ASPEED
148 	{ 0x500, BIT(6), 0         	},
149 	{ 0x400, GENMASK(11, 0), 0 	},
150 #endif
151 };
152 
153 static struct aspeed_sig_desc rgmii2[] = {
154 	{ 0x500, BIT(7), 0		},
155 	{ 0x400, GENMASK(23, 12), 0 	},
156 };
157 
158 static struct aspeed_sig_desc rgmii3[] = {
159 	{ 0x510, BIT(0), 0         },
160 	{ 0x410, GENMASK(27, 16), 0	},
161 };
162 
163 static struct aspeed_sig_desc rgmii4[] = {
164 	{ 0x510, BIT(1), 0         },
165 	{ 0x410, GENMASK(31, 28), 1	},
166 	{ 0x4b0, GENMASK(31, 28), 0	},
167 	{ 0x474, GENMASK(7, 0), 1	},
168 	{ 0x414, GENMASK(7, 0), 1	},
169 	{ 0x4b4, GENMASK(7, 0), 0	},
170 };
171 
172 static struct aspeed_sig_desc rmii1[] = {
173 	{ 0x504, BIT(6), 0         	},
174 	{ 0x400, GENMASK(3, 0), 0	},
175 	{ 0x400, GENMASK(11, 6), 0	},
176 };
177 
178 static struct aspeed_sig_desc rmii2[] = {
179 	{ 0x504, BIT(7), 0         	},
180 	{ 0x400, GENMASK(15, 12), 0	},
181 	{ 0x400, GENMASK(23, 18), 0	},
182 };
183 
184 static struct aspeed_sig_desc rmii3[] = {
185 	{ 0x514, BIT(0), 0         	},
186 	{ 0x410, GENMASK(27, 22), 0	},
187 	{ 0x410, GENMASK(19, 16), 0	},
188 };
189 
190 static struct aspeed_sig_desc rmii4[] = {
191 	{ 0x514, BIT(1), 0         	},
192 	{ 0x410, GENMASK(7, 2), 1	},
193 	{ 0x410, GENMASK(31, 28), 1	},
194 	{ 0x414, GENMASK(7, 2), 1	},
195 	{ 0x4B0, GENMASK(31, 28), 0	},
196 	{ 0x4B4, GENMASK(7, 2), 0	},
197 };
198 
199 static struct aspeed_sig_desc rmii1_rclk_oe[] = {
200 	{ 0x340, BIT(29), 0         	},
201 };
202 static struct aspeed_sig_desc rmii2_rclk_oe[] = {
203 	{ 0x340, BIT(30), 0         	},
204 };
205 
206 static struct aspeed_sig_desc rmii3_rclk_oe[] = {
207 	{ 0x350, BIT(29), 0         	},
208 };
209 static struct aspeed_sig_desc rmii4_rclk_oe[] = {
210 	{ 0x350, BIT(30), 0         	},
211 };
212 
213 static struct aspeed_sig_desc mdio1_link[] = {
214 	{ 0x430, BIT(17) | BIT(16), 0	},
215 };
216 
217 static struct aspeed_sig_desc mdio2_link[] = {
218 	{ 0x470, BIT(13) | BIT(12), 1	},
219 	{ 0x410, BIT(13) | BIT(12), 0	},
220 };
221 
222 static struct aspeed_sig_desc mdio3_link[] = {
223 	{ 0x470, BIT(1) | BIT(0), 1	},
224 	{ 0x410, BIT(1) | BIT(0), 0	},
225 };
226 
227 static struct aspeed_sig_desc mdio4_link[] = {
228 	{ 0x470, BIT(3) | BIT(2), 1	},
229 	{ 0x410, BIT(3) | BIT(2), 0	},
230 };
231 
232 static struct aspeed_sig_desc sdio2_link[] = {
233 	{ 0x414, GENMASK(23, 16), 1	},
234 	{ 0x4B4, GENMASK(23, 16), 0	},
235 	{ 0x450, BIT(1), 0		},
236 };
237 
238 static struct aspeed_sig_desc sdio1_link[] = {
239 	{ 0x414, GENMASK(15, 8), 0	},
240 };
241 
242 //when sdio1 8bits, sdio2 can't use
243 static struct aspeed_sig_desc sdio1_8bit_link[] = {
244 	{ 0x414, GENMASK(15, 8), 0	},
245 	{ 0x4b4, GENMASK(21, 18), 0	},
246 	{ 0x450, BIT(3), 0	},
247 	{ 0x450, BIT(1), 1	},
248 };
249 
250 static struct aspeed_sig_desc emmc_link[] = {
251 	{ 0x400, GENMASK(31, 24), 0 },
252 };
253 
254 static struct aspeed_sig_desc emmcg8_link[] = {
255 	{ 0x400, GENMASK(31, 24), 0 },
256 	{ 0x404, GENMASK(3, 0), 0 },
257 //because it is strap use 0x4 to clear
258 	{ 0x504, BIT(3), 0 },
259 	{ 0x504, BIT(5), 0 },
260 };
261 
262 static struct aspeed_sig_desc fmcquad_link[] = {
263 	{ 0x438, GENMASK(5, 4), 0 },
264 };
265 
266 static struct aspeed_sig_desc spi1_link[] = {
267 	{ 0x438, GENMASK(13, 11), 0 },
268 };
269 
270 static struct aspeed_sig_desc spi1abr_link[] = {
271 	{ 0x438, BIT(9), 0 },
272 };
273 
274 static struct aspeed_sig_desc spi1cs1_link[] = {
275 	{ 0x438, BIT(8), 0 },
276 };
277 
278 static struct aspeed_sig_desc spi1wp_link[] = {
279 	{ 0x438, BIT(10), 0 },
280 };
281 
282 static struct aspeed_sig_desc spi1quad_link[] = {
283 	{ 0x438, GENMASK(15, 14), 0 },
284 };
285 
286 static struct aspeed_sig_desc spi2_link[] = {
287 	{ 0x434, GENMASK(29, 27) | BIT(24), 0 },
288 };
289 
290 static struct aspeed_sig_desc spi2cs1_link[] = {
291 	{ 0x434, BIT(25), 0 },
292 };
293 
294 static struct aspeed_sig_desc spi2cs2_link[] = {
295 	{ 0x434, BIT(26), 0 },
296 };
297 
298 static struct aspeed_sig_desc spi2quad_link[] = {
299 	{ 0x434, GENMASK(31, 30), 0 },
300 };
301 
302 static struct aspeed_sig_desc fsi1[] = {
303 	{ 0xd48, GENMASK(21, 20), 0 },
304 };
305 
306 static struct aspeed_sig_desc fsi2[] = {
307 	{ 0xd48, GENMASK(23, 22), 0 },
308 };
309 
310 static struct aspeed_sig_desc usb2ad_link[] = {
311 	{ 0x440, BIT(24), 0 },
312 	{ 0x440, BIT(25), 1 },
313 };
314 
315 static struct aspeed_sig_desc usb2ah_link[] = {
316 	{ 0x440, BIT(24), 1 },
317 	{ 0x440, BIT(25), 0 },
318 };
319 
320 static struct aspeed_sig_desc usb2bh_link[] = {
321 	{ 0x440, BIT(28), 1 },
322 	{ 0x440, BIT(29), 0 },
323 };
324 
325 static struct aspeed_sig_desc pcie0rc_link[] = {
326 	{ 0x40, BIT(21), 0 },
327 	{ 0xC8, BIT(6), 1 },	//enable ep for as Root Complex
328 };
329 
330 static struct aspeed_sig_desc pcie1rc_link[] = {
331 	{ 0x40, BIT(19), 0 },	//SSPRST# output enable
332 	{ 0x500, BIT(24), 0 },	//dedicate rc reset
333 };
334 
335 static struct aspeed_sig_desc txd1_link[] = {
336 	{ 0x41c, BIT(6), 0 },
337 };
338 
339 static struct aspeed_sig_desc rxd1_link[] = {
340 	{ 0x41c, BIT(7), 0 },
341 };
342 
343 static struct aspeed_sig_desc txd2_link[] = {
344 	{ 0x41c, BIT(14), 0 },
345 };
346 
347 static struct aspeed_sig_desc rxd2_link[] = {
348 	{ 0x41c, BIT(15), 0 },
349 };
350 
351 static struct aspeed_sig_desc txd3_link[] = {
352 	{ 0x418, BIT(28), 0 },
353 };
354 
355 static struct aspeed_sig_desc rxd3_link[] = {
356 	{ 0x418, BIT(29), 0 },
357 };
358 
359 static struct aspeed_sig_desc txd4_link[] = {
360 	{ 0x410, BIT(14), 0 },
361 };
362 
363 static struct aspeed_sig_desc rxd4_link[] = {
364 	{ 0x410, BIT(15), 0 },
365 };
366 
367 static const struct aspeed_group_config ast2600_groups[] = {
368 	{ "MAC1LINK", ARRAY_SIZE(mac1_link), mac1_link },
369 	{ "MAC2LINK", ARRAY_SIZE(mac2_link), mac2_link },
370 	{ "MAC3LINK", ARRAY_SIZE(mac3_link), mac3_link },
371 	{ "MAC4LINK", ARRAY_SIZE(mac4_link), mac4_link },
372 	{ "RGMII1", ARRAY_SIZE(rgmii1), rgmii1 },
373 	{ "RGMII2", ARRAY_SIZE(rgmii2), rgmii2 },
374 	{ "RGMII3", ARRAY_SIZE(rgmii3), rgmii3 },
375 	{ "RGMII4", ARRAY_SIZE(rgmii4), rgmii4 },
376 	{ "RMII1", ARRAY_SIZE(rmii1), rmii1 },
377 	{ "RMII2", ARRAY_SIZE(rmii2), rmii2 },
378 	{ "RMII3", ARRAY_SIZE(rmii3), rmii3 },
379 	{ "RMII4", ARRAY_SIZE(rmii4), rmii4 },
380 	{ "RMII1RCLK", ARRAY_SIZE(rmii1_rclk_oe), rmii1_rclk_oe },
381 	{ "RMII2RCLK", ARRAY_SIZE(rmii2_rclk_oe), rmii2_rclk_oe },
382 	{ "RMII3RCLK", ARRAY_SIZE(rmii3_rclk_oe), rmii3_rclk_oe },
383 	{ "RMII4RCLK", ARRAY_SIZE(rmii4_rclk_oe), rmii4_rclk_oe },
384 	{ "MDIO1", ARRAY_SIZE(mdio1_link), mdio1_link },
385 	{ "MDIO2", ARRAY_SIZE(mdio2_link), mdio2_link },
386 	{ "MDIO3", ARRAY_SIZE(mdio3_link), mdio3_link },
387 	{ "MDIO4", ARRAY_SIZE(mdio4_link), mdio4_link },
388 	{ "SD1", ARRAY_SIZE(sdio1_link), sdio1_link },
389 	{ "SD1_8bits", ARRAY_SIZE(sdio1_8bit_link), sdio1_8bit_link },
390 	{ "SD2", ARRAY_SIZE(sdio2_link), sdio2_link },
391 	{ "EMMC", ARRAY_SIZE(emmc_link), emmc_link },
392 	{ "EMMCG8", ARRAY_SIZE(emmcg8_link), emmcg8_link },
393 	{ "FMCQUAD", ARRAY_SIZE(fmcquad_link), fmcquad_link },
394 	{ "SPI1", ARRAY_SIZE(spi1_link), spi1_link },
395 	{ "SPI1ABR", ARRAY_SIZE(spi1abr_link), spi1abr_link },
396 	{ "SPI1CS1", ARRAY_SIZE(spi1cs1_link), spi1cs1_link },
397 	{ "SPI1WP", ARRAY_SIZE(spi1wp_link), spi1wp_link },
398 	{ "SPI1QUAD", ARRAY_SIZE(spi1quad_link), spi1quad_link },
399 	{ "SPI2", ARRAY_SIZE(spi2_link), spi2_link },
400 	{ "SPI2CS1", ARRAY_SIZE(spi2cs1_link), spi2cs1_link },
401 	{ "SPI2CS2", ARRAY_SIZE(spi2cs2_link), spi2cs2_link },
402 	{ "SPI2QUAD", ARRAY_SIZE(spi2quad_link), spi2quad_link },
403 	{ "I2C1", ARRAY_SIZE(i2c1_link), i2c1_link },
404 	{ "I2C2", ARRAY_SIZE(i2c2_link), i2c2_link },
405 	{ "I2C3", ARRAY_SIZE(i2c3_link), i2c3_link },
406 	{ "I2C4", ARRAY_SIZE(i2c4_link), i2c4_link },
407 	{ "I2C5", ARRAY_SIZE(i2c5_link), i2c5_link },
408 	{ "I2C6", ARRAY_SIZE(i2c6_link), i2c6_link },
409 	{ "I2C7", ARRAY_SIZE(i2c7_link), i2c7_link },
410 	{ "I2C8", ARRAY_SIZE(i2c8_link), i2c8_link },
411 	{ "I2C9", ARRAY_SIZE(i2c9_link), i2c9_link },
412 	{ "I2C10", ARRAY_SIZE(i2c10_link), i2c10_link },
413 	{ "I2C11", ARRAY_SIZE(i2c11_link), i2c11_link },
414 	{ "I2C12", ARRAY_SIZE(i2c12_link), i2c12_link },
415 	{ "I2C13", ARRAY_SIZE(i2c13_link), i2c13_link },
416 	{ "I2C14", ARRAY_SIZE(i2c14_link), i2c14_link },
417 	{ "I2C15", ARRAY_SIZE(i2c15_link), i2c15_link },
418 	{ "I2C16", ARRAY_SIZE(i2c16_link), i2c16_link },
419 	{ "FSI1", ARRAY_SIZE(fsi1), fsi1 },
420 	{ "FSI2", ARRAY_SIZE(fsi2), fsi2 },
421 	{ "USB2AD", ARRAY_SIZE(usb2ad_link), usb2ad_link },
422 	{ "USB2AH", ARRAY_SIZE(usb2ah_link), usb2ah_link },
423 	{ "USB2BH", ARRAY_SIZE(usb2bh_link), usb2bh_link },
424 	{ "PCIE0RC", ARRAY_SIZE(pcie0rc_link), pcie0rc_link },
425 	{ "PCIE1RC", ARRAY_SIZE(pcie1rc_link), pcie1rc_link },
426 	{ "TXD1", ARRAY_SIZE(txd1_link), txd1_link },
427 	{ "RXD1", ARRAY_SIZE(rxd1_link), rxd1_link },
428 	{ "TXD2", ARRAY_SIZE(txd2_link), txd2_link },
429 	{ "RXD2", ARRAY_SIZE(rxd2_link), rxd2_link },
430 	{ "TXD3", ARRAY_SIZE(txd3_link), txd3_link },
431 	{ "RXD3", ARRAY_SIZE(rxd3_link), rxd3_link },
432 	{ "TXD4", ARRAY_SIZE(txd4_link), txd4_link },
433 	{ "RXD4", ARRAY_SIZE(rxd4_link), rxd4_link },
434 
435 };
436 
437 static int ast2600_pinctrl_get_groups_count(struct udevice *dev)
438 {
439 	debug("PINCTRL: get_(functions/groups)_count\n");
440 
441 	return ARRAY_SIZE(ast2600_groups);
442 }
443 
444 static const char *ast2600_pinctrl_get_group_name(struct udevice *dev,
445 						  unsigned selector)
446 {
447 	debug("PINCTRL: get_(function/group)_name %u\n", selector);
448 
449 	return ast2600_groups[selector].group_name;
450 }
451 
452 static int ast2600_pinctrl_group_set(struct udevice *dev, unsigned selector,
453 				     unsigned func_selector)
454 {
455 	struct ast2600_pinctrl_priv *priv = dev_get_priv(dev);
456 	const struct aspeed_group_config *config;
457 	const struct aspeed_sig_desc *descs;
458 	u32 ctrl_reg = (u32)priv->scu;
459 	u32 i;
460 
461 	debug("PINCTRL: group_set <%u, %u>\n", selector, func_selector);
462 	if (selector >= ARRAY_SIZE(ast2600_groups))
463 		return -EINVAL;
464 
465 	config = &ast2600_groups[selector];
466 	for (i = 0; i < config->ndescs; i++) {
467 		descs = &config->descs[i];
468 		if (descs->clr) {
469 			clrbits_le32((u32)ctrl_reg + descs->offset,
470 				     descs->reg_set);
471 		} else {
472 			setbits_le32((u32)ctrl_reg + descs->offset,
473 				     descs->reg_set);
474 		}
475 	}
476 
477 	return 0;
478 }
479 
480 static struct pinctrl_ops ast2600_pinctrl_ops = {
481 	.set_state = pinctrl_generic_set_state,
482 	.get_groups_count = ast2600_pinctrl_get_groups_count,
483 	.get_group_name = ast2600_pinctrl_get_group_name,
484 	.get_functions_count = ast2600_pinctrl_get_groups_count,
485 	.get_function_name = ast2600_pinctrl_get_group_name,
486 	.pinmux_group_set = ast2600_pinctrl_group_set,
487 };
488 
489 static const struct udevice_id ast2600_pinctrl_ids[] = {
490 	{ .compatible = "aspeed,g6-pinctrl" },
491 	{ }
492 };
493 
494 U_BOOT_DRIVER(pinctrl_aspeed) = {
495 	.name = "aspeed_ast2600_pinctrl",
496 	.id = UCLASS_PINCTRL,
497 	.of_match = ast2600_pinctrl_ids,
498 	.priv_auto_alloc_size = sizeof(struct ast2600_pinctrl_priv),
499 	.ops = &ast2600_pinctrl_ops,
500 	.probe = ast2600_pinctrl_probe,
501 };
502