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1// SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause)
2/*
3 * Copyright (C) 2004-2016 Synopsys, Inc.
4 */
5
6#include <linux/kernel.h>
7#include <linux/module.h>
8#include <linux/of.h>
9#include <linux/usb/of.h>
10#include <linux/pci_ids.h>
11#include <linux/pci.h>
12
13#include "core.h"
14
15#define PCI_PRODUCT_ID_HAPS_HSOTG 0xabc0
16#define PCI_DEVICE_ID_LOONGSON_DWC2 0x7a04
17
18static void dwc2_set_bcm_params(struct dwc2_hsotg *hsotg)
19{
20 struct dwc2_core_params *p = &hsotg->params;
21
22 p->host_rx_fifo_size = 774;
23 p->max_transfer_size = 65535;
24 p->max_packet_count = 511;
25 p->ahbcfg = 0x10;
26}
27
28static void dwc2_set_his_params(struct dwc2_hsotg *hsotg)
29{
30 struct dwc2_core_params *p = &hsotg->params;
31
32 p->otg_caps.hnp_support = false;
33 p->otg_caps.srp_support = false;
34 p->speed = DWC2_SPEED_PARAM_HIGH;
35 p->host_rx_fifo_size = 512;
36 p->host_nperio_tx_fifo_size = 512;
37 p->host_perio_tx_fifo_size = 512;
38 p->max_transfer_size = 65535;
39 p->max_packet_count = 511;
40 p->host_channels = 16;
41 p->phy_type = DWC2_PHY_TYPE_PARAM_UTMI;
42 p->phy_utmi_width = 8;
43 p->i2c_enable = false;
44 p->reload_ctl = false;
45 p->ahbcfg = GAHBCFG_HBSTLEN_INCR16 <<
46 GAHBCFG_HBSTLEN_SHIFT;
47 p->change_speed_quirk = true;
48 p->power_down = DWC2_POWER_DOWN_PARAM_NONE;
49}
50
51static void dwc2_set_jz4775_params(struct dwc2_hsotg *hsotg)
52{
53 struct dwc2_core_params *p = &hsotg->params;
54
55 p->otg_caps.hnp_support = false;
56 p->speed = DWC2_SPEED_PARAM_HIGH;
57 p->phy_type = DWC2_PHY_TYPE_PARAM_UTMI;
58 p->phy_utmi_width = 16;
59 p->activate_ingenic_overcurrent_detection =
60 !device_property_read_bool(hsotg->dev, "disable-over-current");
61}
62
63static void dwc2_set_loongson_params(struct dwc2_hsotg *hsotg)
64{
65 struct dwc2_core_params *p = &hsotg->params;
66
67 p->phy_utmi_width = 8;
68 p->power_down = DWC2_POWER_DOWN_PARAM_PARTIAL;
69}
70
71static void dwc2_set_x1600_params(struct dwc2_hsotg *hsotg)
72{
73 struct dwc2_core_params *p = &hsotg->params;
74
75 p->otg_caps.hnp_support = false;
76 p->speed = DWC2_SPEED_PARAM_HIGH;
77 p->host_channels = 16;
78 p->phy_type = DWC2_PHY_TYPE_PARAM_UTMI;
79 p->phy_utmi_width = 16;
80 p->activate_ingenic_overcurrent_detection =
81 !device_property_read_bool(hsotg->dev, "disable-over-current");
82}
83
84static void dwc2_set_x2000_params(struct dwc2_hsotg *hsotg)
85{
86 struct dwc2_core_params *p = &hsotg->params;
87
88 p->otg_caps.hnp_support = false;
89 p->speed = DWC2_SPEED_PARAM_HIGH;
90 p->host_rx_fifo_size = 1024;
91 p->host_nperio_tx_fifo_size = 1024;
92 p->host_perio_tx_fifo_size = 1024;
93 p->host_channels = 16;
94 p->phy_type = DWC2_PHY_TYPE_PARAM_UTMI;
95 p->phy_utmi_width = 16;
96 p->activate_ingenic_overcurrent_detection =
97 !device_property_read_bool(hsotg->dev, "disable-over-current");
98}
99
100static void dwc2_set_s3c6400_params(struct dwc2_hsotg *hsotg)
101{
102 struct dwc2_core_params *p = &hsotg->params;
103
104 p->power_down = DWC2_POWER_DOWN_PARAM_NONE;
105 p->no_clock_gating = true;
106 p->phy_utmi_width = 8;
107}
108
109static void dwc2_set_socfpga_agilex_params(struct dwc2_hsotg *hsotg)
110{
111 struct dwc2_core_params *p = &hsotg->params;
112
113 p->power_down = DWC2_POWER_DOWN_PARAM_NONE;
114 p->no_clock_gating = true;
115}
116
117static void dwc2_set_rk_params(struct dwc2_hsotg *hsotg)
118{
119 struct dwc2_core_params *p = &hsotg->params;
120
121 p->otg_caps.hnp_support = false;
122 p->otg_caps.srp_support = false;
123 p->host_rx_fifo_size = 525;
124 p->host_nperio_tx_fifo_size = 128;
125 p->host_perio_tx_fifo_size = 256;
126 p->ahbcfg = GAHBCFG_HBSTLEN_INCR16 <<
127 GAHBCFG_HBSTLEN_SHIFT;
128 p->power_down = DWC2_POWER_DOWN_PARAM_NONE;
129 p->lpm = false;
130 p->lpm_clock_gating = false;
131 p->besl = false;
132 p->hird_threshold_en = false;
133 p->no_clock_gating = true;
134}
135
136static void dwc2_set_ltq_danube_params(struct dwc2_hsotg *hsotg)
137{
138 struct dwc2_core_params *p = &hsotg->params;
139
140 p->otg_caps.hnp_support = false;
141 p->otg_caps.srp_support = false;
142}
143
144static void dwc2_set_ltq_ase_params(struct dwc2_hsotg *hsotg)
145{
146 struct dwc2_core_params *p = &hsotg->params;
147
148 p->otg_caps.hnp_support = false;
149 p->otg_caps.srp_support = false;
150 p->host_rx_fifo_size = 288;
151 p->host_nperio_tx_fifo_size = 128;
152 p->host_perio_tx_fifo_size = 96;
153 p->ahbcfg = GAHBCFG_HBSTLEN_INCR16 <<
154 GAHBCFG_HBSTLEN_SHIFT;
155}
156
157static void dwc2_set_ltq_xrx200_params(struct dwc2_hsotg *hsotg)
158{
159 struct dwc2_core_params *p = &hsotg->params;
160
161 p->otg_caps.hnp_support = false;
162 p->otg_caps.srp_support = false;
163 p->host_rx_fifo_size = 288;
164 p->host_nperio_tx_fifo_size = 128;
165 p->host_perio_tx_fifo_size = 136;
166}
167
168static void dwc2_set_amlogic_params(struct dwc2_hsotg *hsotg)
169{
170 struct dwc2_core_params *p = &hsotg->params;
171
172 p->otg_caps.hnp_support = false;
173 p->otg_caps.srp_support = false;
174 p->speed = DWC2_SPEED_PARAM_HIGH;
175 p->host_rx_fifo_size = 512;
176 p->host_nperio_tx_fifo_size = 500;
177 p->host_perio_tx_fifo_size = 500;
178 p->host_channels = 16;
179 p->phy_type = DWC2_PHY_TYPE_PARAM_UTMI;
180 p->ahbcfg = GAHBCFG_HBSTLEN_INCR8 <<
181 GAHBCFG_HBSTLEN_SHIFT;
182 p->power_down = DWC2_POWER_DOWN_PARAM_NONE;
183}
184
185static void dwc2_set_amlogic_g12a_params(struct dwc2_hsotg *hsotg)
186{
187 struct dwc2_core_params *p = &hsotg->params;
188
189 p->lpm = false;
190 p->lpm_clock_gating = false;
191 p->besl = false;
192 p->hird_threshold_en = false;
193}
194
195static void dwc2_set_amlogic_a1_params(struct dwc2_hsotg *hsotg)
196{
197 struct dwc2_core_params *p = &hsotg->params;
198
199 p->otg_caps.hnp_support = false;
200 p->otg_caps.srp_support = false;
201 p->speed = DWC2_SPEED_PARAM_HIGH;
202 p->host_rx_fifo_size = 192;
203 p->host_nperio_tx_fifo_size = 128;
204 p->host_perio_tx_fifo_size = 128;
205 p->phy_type = DWC2_PHY_TYPE_PARAM_UTMI;
206 p->phy_utmi_width = 8;
207 p->ahbcfg = GAHBCFG_HBSTLEN_INCR8 << GAHBCFG_HBSTLEN_SHIFT;
208 p->lpm = false;
209 p->lpm_clock_gating = false;
210 p->besl = false;
211 p->hird_threshold_en = false;
212}
213
214static void dwc2_set_amcc_params(struct dwc2_hsotg *hsotg)
215{
216 struct dwc2_core_params *p = &hsotg->params;
217
218 p->ahbcfg = GAHBCFG_HBSTLEN_INCR16 << GAHBCFG_HBSTLEN_SHIFT;
219}
220
221static void dwc2_set_cv1800_params(struct dwc2_hsotg *hsotg)
222{
223 struct dwc2_core_params *p = &hsotg->params;
224
225 p->otg_caps.hnp_support = false;
226 p->otg_caps.srp_support = false;
227 p->host_dma = false;
228 p->g_dma = false;
229 p->speed = DWC2_SPEED_PARAM_HIGH;
230 p->phy_type = DWC2_PHY_TYPE_PARAM_UTMI;
231 p->phy_utmi_width = 16;
232 p->ahbcfg = GAHBCFG_HBSTLEN_INCR16 << GAHBCFG_HBSTLEN_SHIFT;
233 p->lpm = false;
234 p->lpm_clock_gating = false;
235 p->besl = false;
236 p->hird_threshold_en = false;
237 p->power_down = DWC2_POWER_DOWN_PARAM_NONE;
238}
239
240static void dwc2_set_stm32f4x9_fsotg_params(struct dwc2_hsotg *hsotg)
241{
242 struct dwc2_core_params *p = &hsotg->params;
243
244 p->otg_caps.hnp_support = false;
245 p->otg_caps.srp_support = false;
246 p->speed = DWC2_SPEED_PARAM_FULL;
247 p->host_rx_fifo_size = 128;
248 p->host_nperio_tx_fifo_size = 96;
249 p->host_perio_tx_fifo_size = 96;
250 p->max_packet_count = 256;
251 p->phy_type = DWC2_PHY_TYPE_PARAM_FS;
252 p->i2c_enable = false;
253 p->activate_stm_fs_transceiver = true;
254}
255
256static void dwc2_set_stm32f7_hsotg_params(struct dwc2_hsotg *hsotg)
257{
258 struct dwc2_core_params *p = &hsotg->params;
259
260 p->host_rx_fifo_size = 622;
261 p->host_nperio_tx_fifo_size = 128;
262 p->host_perio_tx_fifo_size = 256;
263}
264
265static void dwc2_set_stm32mp15_fsotg_params(struct dwc2_hsotg *hsotg)
266{
267 struct dwc2_core_params *p = &hsotg->params;
268
269 p->otg_caps.hnp_support = false;
270 p->otg_caps.srp_support = false;
271 p->otg_caps.otg_rev = 0x200;
272 p->speed = DWC2_SPEED_PARAM_FULL;
273 p->host_rx_fifo_size = 128;
274 p->host_nperio_tx_fifo_size = 96;
275 p->host_perio_tx_fifo_size = 96;
276 p->max_packet_count = 256;
277 p->phy_type = DWC2_PHY_TYPE_PARAM_FS;
278 p->i2c_enable = false;
279 p->activate_stm_fs_transceiver = true;
280 p->activate_stm_id_vb_detection = true;
281 p->ahbcfg = GAHBCFG_HBSTLEN_INCR16 << GAHBCFG_HBSTLEN_SHIFT;
282 p->power_down = DWC2_POWER_DOWN_PARAM_NONE;
283 p->host_support_fs_ls_low_power = true;
284 p->host_ls_low_power_phy_clk = true;
285}
286
287static void dwc2_set_stm32mp15_hsotg_params(struct dwc2_hsotg *hsotg)
288{
289 struct dwc2_core_params *p = &hsotg->params;
290
291 p->otg_caps.hnp_support = false;
292 p->otg_caps.srp_support = false;
293 p->otg_caps.otg_rev = 0x200;
294 p->activate_stm_id_vb_detection = !device_property_read_bool(hsotg->dev, "usb-role-switch");
295 p->host_rx_fifo_size = 440;
296 p->host_nperio_tx_fifo_size = 256;
297 p->host_perio_tx_fifo_size = 256;
298 p->ahbcfg = GAHBCFG_HBSTLEN_INCR16 << GAHBCFG_HBSTLEN_SHIFT;
299 p->power_down = DWC2_POWER_DOWN_PARAM_NONE;
300 p->lpm = false;
301 p->lpm_clock_gating = false;
302 p->besl = false;
303 p->hird_threshold_en = false;
304}
305
306const struct of_device_id dwc2_of_match_table[] = {
307 { .compatible = "brcm,bcm2835-usb", .data = dwc2_set_bcm_params },
308 { .compatible = "hisilicon,hi6220-usb", .data = dwc2_set_his_params },
309 { .compatible = "ingenic,jz4775-otg", .data = dwc2_set_jz4775_params },
310 { .compatible = "ingenic,jz4780-otg", .data = dwc2_set_jz4775_params },
311 { .compatible = "ingenic,x1000-otg", .data = dwc2_set_jz4775_params },
312 { .compatible = "ingenic,x1600-otg", .data = dwc2_set_x1600_params },
313 { .compatible = "ingenic,x1700-otg", .data = dwc2_set_x1600_params },
314 { .compatible = "ingenic,x1830-otg", .data = dwc2_set_x1600_params },
315 { .compatible = "ingenic,x2000-otg", .data = dwc2_set_x2000_params },
316 { .compatible = "rockchip,rk3066-usb", .data = dwc2_set_rk_params },
317 { .compatible = "lantiq,danube-usb", .data = &dwc2_set_ltq_danube_params },
318 { .compatible = "lantiq,ase-usb", .data = &dwc2_set_ltq_ase_params },
319 { .compatible = "lantiq,arx100-usb", .data = &dwc2_set_ltq_ase_params },
320 { .compatible = "lantiq,xrx200-usb", .data = &dwc2_set_ltq_xrx200_params },
321 { .compatible = "lantiq,xrx300-usb", .data = &dwc2_set_ltq_xrx200_params },
322 { .compatible = "snps,dwc2" },
323 { .compatible = "samsung,s3c6400-hsotg",
324 .data = dwc2_set_s3c6400_params },
325 { .compatible = "amlogic,meson8-usb",
326 .data = dwc2_set_amlogic_params },
327 { .compatible = "amlogic,meson8b-usb",
328 .data = dwc2_set_amlogic_params },
329 { .compatible = "amlogic,meson-gxbb-usb",
330 .data = dwc2_set_amlogic_params },
331 { .compatible = "amlogic,meson-g12a-usb",
332 .data = dwc2_set_amlogic_g12a_params },
333 { .compatible = "amlogic,meson-a1-usb",
334 .data = dwc2_set_amlogic_a1_params },
335 { .compatible = "amcc,dwc-otg", .data = dwc2_set_amcc_params },
336 { .compatible = "apm,apm82181-dwc-otg", .data = dwc2_set_amcc_params },
337 { .compatible = "sophgo,cv1800b-usb",
338 .data = dwc2_set_cv1800_params },
339 { .compatible = "st,stm32f4x9-fsotg",
340 .data = dwc2_set_stm32f4x9_fsotg_params },
341 { .compatible = "st,stm32f4x9-hsotg" },
342 { .compatible = "st,stm32f7-hsotg",
343 .data = dwc2_set_stm32f7_hsotg_params },
344 { .compatible = "st,stm32mp15-fsotg",
345 .data = dwc2_set_stm32mp15_fsotg_params },
346 { .compatible = "st,stm32mp15-hsotg",
347 .data = dwc2_set_stm32mp15_hsotg_params },
348 { .compatible = "intel,socfpga-agilex-hsotg",
349 .data = dwc2_set_socfpga_agilex_params },
350 {},
351};
352MODULE_DEVICE_TABLE(of, dwc2_of_match_table);
353
354const struct acpi_device_id dwc2_acpi_match[] = {
355 /* This ID refers to the same USB IP as of_device_id brcm,bcm2835-usb */
356 { "BCM2848", (kernel_ulong_t)dwc2_set_bcm_params },
357 { },
358};
359MODULE_DEVICE_TABLE(acpi, dwc2_acpi_match);
360
361const struct pci_device_id dwc2_pci_ids[] = {
362 {
363 PCI_DEVICE(PCI_VENDOR_ID_SYNOPSYS, PCI_PRODUCT_ID_HAPS_HSOTG),
364 },
365 {
366 PCI_DEVICE(PCI_VENDOR_ID_STMICRO,
367 PCI_DEVICE_ID_STMICRO_USB_OTG),
368 },
369 {
370 PCI_DEVICE(PCI_VENDOR_ID_LOONGSON, PCI_DEVICE_ID_LOONGSON_DWC2),
371 .driver_data = (unsigned long)dwc2_set_loongson_params,
372 },
373 { /* end: all zeroes */ }
374};
375MODULE_DEVICE_TABLE(pci, dwc2_pci_ids);
376EXPORT_SYMBOL_GPL(dwc2_pci_ids);
377
378static void dwc2_set_param_otg_cap(struct dwc2_hsotg *hsotg)
379{
380 switch (hsotg->hw_params.op_mode) {
381 case GHWCFG2_OP_MODE_HNP_SRP_CAPABLE:
382 hsotg->params.otg_caps.hnp_support = true;
383 hsotg->params.otg_caps.srp_support = true;
384 break;
385 case GHWCFG2_OP_MODE_SRP_ONLY_CAPABLE:
386 case GHWCFG2_OP_MODE_SRP_CAPABLE_DEVICE:
387 case GHWCFG2_OP_MODE_SRP_CAPABLE_HOST:
388 hsotg->params.otg_caps.hnp_support = false;
389 hsotg->params.otg_caps.srp_support = true;
390 break;
391 default:
392 hsotg->params.otg_caps.hnp_support = false;
393 hsotg->params.otg_caps.srp_support = false;
394 break;
395 }
396}
397
398static void dwc2_set_param_phy_type(struct dwc2_hsotg *hsotg)
399{
400 int val;
401 u32 hs_phy_type = hsotg->hw_params.hs_phy_type;
402
403 val = DWC2_PHY_TYPE_PARAM_FS;
404 if (hs_phy_type != GHWCFG2_HS_PHY_TYPE_NOT_SUPPORTED) {
405 if (hs_phy_type == GHWCFG2_HS_PHY_TYPE_UTMI ||
406 hs_phy_type == GHWCFG2_HS_PHY_TYPE_UTMI_ULPI)
407 val = DWC2_PHY_TYPE_PARAM_UTMI;
408 else
409 val = DWC2_PHY_TYPE_PARAM_ULPI;
410 }
411
412 if (dwc2_is_fs_iot(hsotg))
413 hsotg->params.phy_type = DWC2_PHY_TYPE_PARAM_FS;
414
415 hsotg->params.phy_type = val;
416}
417
418static void dwc2_set_param_speed(struct dwc2_hsotg *hsotg)
419{
420 int val;
421
422 val = hsotg->params.phy_type == DWC2_PHY_TYPE_PARAM_FS ?
423 DWC2_SPEED_PARAM_FULL : DWC2_SPEED_PARAM_HIGH;
424
425 if (dwc2_is_fs_iot(hsotg))
426 val = DWC2_SPEED_PARAM_FULL;
427
428 if (dwc2_is_hs_iot(hsotg))
429 val = DWC2_SPEED_PARAM_HIGH;
430
431 hsotg->params.speed = val;
432}
433
434static void dwc2_set_param_phy_utmi_width(struct dwc2_hsotg *hsotg)
435{
436 int val;
437
438 val = (hsotg->hw_params.utmi_phy_data_width ==
439 GHWCFG4_UTMI_PHY_DATA_WIDTH_8) ? 8 : 16;
440
441 if (hsotg->phy) {
442 /*
443 * If using the generic PHY framework, check if the PHY bus
444 * width is 8-bit and set the phyif appropriately.
445 */
446 if (phy_get_bus_width(hsotg->phy) == 8)
447 val = 8;
448 }
449
450 hsotg->params.phy_utmi_width = val;
451}
452
453static void dwc2_set_param_tx_fifo_sizes(struct dwc2_hsotg *hsotg)
454{
455 struct dwc2_core_params *p = &hsotg->params;
456 int depth_average;
457 int fifo_count;
458 int i;
459
460 fifo_count = dwc2_hsotg_tx_fifo_count(hsotg);
461
462 memset(p->g_tx_fifo_size, 0, sizeof(p->g_tx_fifo_size));
463 depth_average = dwc2_hsotg_tx_fifo_average_depth(hsotg);
464 for (i = 1; i <= fifo_count; i++)
465 p->g_tx_fifo_size[i] = depth_average;
466}
467
468static void dwc2_set_param_power_down(struct dwc2_hsotg *hsotg)
469{
470 int val;
471
472 if (hsotg->hw_params.hibernation)
473 val = DWC2_POWER_DOWN_PARAM_HIBERNATION;
474 else if (hsotg->hw_params.power_optimized)
475 val = DWC2_POWER_DOWN_PARAM_PARTIAL;
476 else
477 val = DWC2_POWER_DOWN_PARAM_NONE;
478
479 hsotg->params.power_down = val;
480}
481
482static void dwc2_set_param_lpm(struct dwc2_hsotg *hsotg)
483{
484 struct dwc2_core_params *p = &hsotg->params;
485
486 p->lpm = hsotg->hw_params.lpm_mode;
487 if (p->lpm) {
488 p->lpm_clock_gating = true;
489 p->besl = true;
490 p->hird_threshold_en = true;
491 p->hird_threshold = 4;
492 } else {
493 p->lpm_clock_gating = false;
494 p->besl = false;
495 p->hird_threshold_en = false;
496 }
497}
498
499/**
500 * dwc2_set_default_params() - Set all core parameters to their
501 * auto-detected default values.
502 *
503 * @hsotg: Programming view of the DWC_otg controller
504 *
505 */
506static void dwc2_set_default_params(struct dwc2_hsotg *hsotg)
507{
508 struct dwc2_hw_params *hw = &hsotg->hw_params;
509 struct dwc2_core_params *p = &hsotg->params;
510 bool dma_capable = !(hw->arch == GHWCFG2_SLAVE_ONLY_ARCH);
511
512 dwc2_set_param_otg_cap(hsotg);
513 dwc2_set_param_phy_type(hsotg);
514 dwc2_set_param_speed(hsotg);
515 dwc2_set_param_phy_utmi_width(hsotg);
516 dwc2_set_param_power_down(hsotg);
517 dwc2_set_param_lpm(hsotg);
518 p->phy_ulpi_ddr = false;
519 p->phy_ulpi_ext_vbus = false;
520 p->eusb2_disc = false;
521
522 p->enable_dynamic_fifo = hw->enable_dynamic_fifo;
523 p->en_multiple_tx_fifo = hw->en_multiple_tx_fifo;
524 p->i2c_enable = hw->i2c_enable;
525 p->acg_enable = hw->acg_enable;
526 p->ulpi_fs_ls = false;
527 p->ts_dline = false;
528 p->reload_ctl = (hw->snpsid >= DWC2_CORE_REV_2_92a);
529 p->uframe_sched = true;
530 p->external_id_pin_ctl = false;
531 p->ipg_isoc_en = false;
532 p->service_interval = false;
533 p->max_packet_count = hw->max_packet_count;
534 p->max_transfer_size = hw->max_transfer_size;
535 p->ahbcfg = GAHBCFG_HBSTLEN_INCR << GAHBCFG_HBSTLEN_SHIFT;
536 p->ref_clk_per = 33333;
537 p->sof_cnt_wkup_alert = 100;
538
539 if ((hsotg->dr_mode == USB_DR_MODE_HOST) ||
540 (hsotg->dr_mode == USB_DR_MODE_OTG)) {
541 p->host_dma = dma_capable;
542 p->dma_desc_enable = false;
543 p->dma_desc_fs_enable = false;
544 p->host_support_fs_ls_low_power = false;
545 p->host_ls_low_power_phy_clk = false;
546 p->host_channels = hw->host_channels;
547 p->host_rx_fifo_size = hw->rx_fifo_size;
548 p->host_nperio_tx_fifo_size = hw->host_nperio_tx_fifo_size;
549 p->host_perio_tx_fifo_size = hw->host_perio_tx_fifo_size;
550 }
551
552 if ((hsotg->dr_mode == USB_DR_MODE_PERIPHERAL) ||
553 (hsotg->dr_mode == USB_DR_MODE_OTG)) {
554 p->g_dma = dma_capable;
555 p->g_dma_desc = hw->dma_desc_enable;
556
557 /*
558 * The values for g_rx_fifo_size (2048) and
559 * g_np_tx_fifo_size (1024) come from the legacy s3c
560 * gadget driver. These defaults have been hard-coded
561 * for some time so many platforms depend on these
562 * values. Leave them as defaults for now and only
563 * auto-detect if the hardware does not support the
564 * default.
565 */
566 p->g_rx_fifo_size = 2048;
567 p->g_np_tx_fifo_size = 1024;
568 dwc2_set_param_tx_fifo_sizes(hsotg);
569 }
570}
571
572/**
573 * dwc2_get_device_properties() - Read in device properties.
574 *
575 * @hsotg: Programming view of the DWC_otg controller
576 *
577 * Read in the device properties and adjust core parameters if needed.
578 */
579static void dwc2_get_device_properties(struct dwc2_hsotg *hsotg)
580{
581 struct dwc2_core_params *p = &hsotg->params;
582 int num;
583
584 if ((hsotg->dr_mode == USB_DR_MODE_PERIPHERAL) ||
585 (hsotg->dr_mode == USB_DR_MODE_OTG)) {
586 device_property_read_u32(hsotg->dev, "g-rx-fifo-size",
587 &p->g_rx_fifo_size);
588
589 device_property_read_u32(hsotg->dev, "g-np-tx-fifo-size",
590 &p->g_np_tx_fifo_size);
591
592 num = device_property_count_u32(hsotg->dev, "g-tx-fifo-size");
593 if (num > 0) {
594 num = min(num, 15);
595 memset(p->g_tx_fifo_size, 0,
596 sizeof(p->g_tx_fifo_size));
597 device_property_read_u32_array(hsotg->dev,
598 "g-tx-fifo-size",
599 &p->g_tx_fifo_size[1],
600 num);
601 }
602
603 of_usb_update_otg_caps(hsotg->dev->of_node, &p->otg_caps);
604 }
605
606 p->oc_disable = of_property_read_bool(hsotg->dev->of_node, "disable-over-current");
607}
608
609static void dwc2_check_param_otg_cap(struct dwc2_hsotg *hsotg)
610{
611 int valid = 1;
612
613 if (hsotg->params.otg_caps.hnp_support && hsotg->params.otg_caps.srp_support) {
614 /* check HNP && SRP capable */
615 if (hsotg->hw_params.op_mode != GHWCFG2_OP_MODE_HNP_SRP_CAPABLE)
616 valid = 0;
617 } else if (!hsotg->params.otg_caps.hnp_support) {
618 /* check SRP only capable */
619 if (hsotg->params.otg_caps.srp_support) {
620 switch (hsotg->hw_params.op_mode) {
621 case GHWCFG2_OP_MODE_HNP_SRP_CAPABLE:
622 case GHWCFG2_OP_MODE_SRP_ONLY_CAPABLE:
623 case GHWCFG2_OP_MODE_SRP_CAPABLE_DEVICE:
624 case GHWCFG2_OP_MODE_SRP_CAPABLE_HOST:
625 break;
626 default:
627 valid = 0;
628 break;
629 }
630 }
631 /* else: NO HNP && NO SRP capable: always valid */
632 } else {
633 valid = 0;
634 }
635
636 if (!valid)
637 dwc2_set_param_otg_cap(hsotg);
638}
639
640static void dwc2_check_param_phy_type(struct dwc2_hsotg *hsotg)
641{
642 int valid = 0;
643 u32 hs_phy_type;
644 u32 fs_phy_type;
645
646 hs_phy_type = hsotg->hw_params.hs_phy_type;
647 fs_phy_type = hsotg->hw_params.fs_phy_type;
648
649 switch (hsotg->params.phy_type) {
650 case DWC2_PHY_TYPE_PARAM_FS:
651 if (fs_phy_type == GHWCFG2_FS_PHY_TYPE_DEDICATED)
652 valid = 1;
653 break;
654 case DWC2_PHY_TYPE_PARAM_UTMI:
655 if ((hs_phy_type == GHWCFG2_HS_PHY_TYPE_UTMI) ||
656 (hs_phy_type == GHWCFG2_HS_PHY_TYPE_UTMI_ULPI))
657 valid = 1;
658 break;
659 case DWC2_PHY_TYPE_PARAM_ULPI:
660 if ((hs_phy_type == GHWCFG2_HS_PHY_TYPE_UTMI) ||
661 (hs_phy_type == GHWCFG2_HS_PHY_TYPE_UTMI_ULPI))
662 valid = 1;
663 break;
664 default:
665 break;
666 }
667
668 if (!valid)
669 dwc2_set_param_phy_type(hsotg);
670}
671
672static void dwc2_check_param_speed(struct dwc2_hsotg *hsotg)
673{
674 int valid = 1;
675 int phy_type = hsotg->params.phy_type;
676 int speed = hsotg->params.speed;
677
678 switch (speed) {
679 case DWC2_SPEED_PARAM_HIGH:
680 if ((hsotg->params.speed == DWC2_SPEED_PARAM_HIGH) &&
681 (phy_type == DWC2_PHY_TYPE_PARAM_FS))
682 valid = 0;
683 break;
684 case DWC2_SPEED_PARAM_FULL:
685 case DWC2_SPEED_PARAM_LOW:
686 break;
687 default:
688 valid = 0;
689 break;
690 }
691
692 if (!valid)
693 dwc2_set_param_speed(hsotg);
694}
695
696static void dwc2_check_param_phy_utmi_width(struct dwc2_hsotg *hsotg)
697{
698 int valid = 0;
699 int param = hsotg->params.phy_utmi_width;
700 int width = hsotg->hw_params.utmi_phy_data_width;
701
702 switch (width) {
703 case GHWCFG4_UTMI_PHY_DATA_WIDTH_8:
704 valid = (param == 8);
705 break;
706 case GHWCFG4_UTMI_PHY_DATA_WIDTH_16:
707 valid = (param == 16);
708 break;
709 case GHWCFG4_UTMI_PHY_DATA_WIDTH_8_OR_16:
710 valid = (param == 8 || param == 16);
711 break;
712 }
713
714 if (!valid)
715 dwc2_set_param_phy_utmi_width(hsotg);
716}
717
718static void dwc2_check_param_power_down(struct dwc2_hsotg *hsotg)
719{
720 int param = hsotg->params.power_down;
721
722 switch (param) {
723 case DWC2_POWER_DOWN_PARAM_NONE:
724 break;
725 case DWC2_POWER_DOWN_PARAM_PARTIAL:
726 if (hsotg->hw_params.power_optimized)
727 break;
728 dev_dbg(hsotg->dev,
729 "Partial power down isn't supported by HW\n");
730 param = DWC2_POWER_DOWN_PARAM_NONE;
731 break;
732 case DWC2_POWER_DOWN_PARAM_HIBERNATION:
733 if (hsotg->hw_params.hibernation)
734 break;
735 dev_dbg(hsotg->dev,
736 "Hibernation isn't supported by HW\n");
737 param = DWC2_POWER_DOWN_PARAM_NONE;
738 break;
739 default:
740 dev_err(hsotg->dev,
741 "%s: Invalid parameter power_down=%d\n",
742 __func__, param);
743 param = DWC2_POWER_DOWN_PARAM_NONE;
744 break;
745 }
746
747 hsotg->params.power_down = param;
748}
749
750static void dwc2_check_param_tx_fifo_sizes(struct dwc2_hsotg *hsotg)
751{
752 int fifo_count;
753 int fifo;
754 int min;
755 u32 total = 0;
756 u32 dptxfszn;
757
758 fifo_count = dwc2_hsotg_tx_fifo_count(hsotg);
759 min = hsotg->hw_params.en_multiple_tx_fifo ? 16 : 4;
760
761 for (fifo = 1; fifo <= fifo_count; fifo++)
762 total += hsotg->params.g_tx_fifo_size[fifo];
763
764 if (total > dwc2_hsotg_tx_fifo_total_depth(hsotg) || !total) {
765 dev_warn(hsotg->dev, "%s: Invalid parameter g-tx-fifo-size, setting to default average\n",
766 __func__);
767 dwc2_set_param_tx_fifo_sizes(hsotg);
768 }
769
770 for (fifo = 1; fifo <= fifo_count; fifo++) {
771 dptxfszn = hsotg->hw_params.g_tx_fifo_size[fifo];
772
773 if (hsotg->params.g_tx_fifo_size[fifo] < min ||
774 hsotg->params.g_tx_fifo_size[fifo] > dptxfszn) {
775 dev_warn(hsotg->dev, "%s: Invalid parameter g_tx_fifo_size[%d]=%d\n",
776 __func__, fifo,
777 hsotg->params.g_tx_fifo_size[fifo]);
778 hsotg->params.g_tx_fifo_size[fifo] = dptxfszn;
779 }
780 }
781}
782
783static void dwc2_check_param_eusb2_disc(struct dwc2_hsotg *hsotg)
784{
785 u32 gsnpsid;
786
787 if (!hsotg->params.eusb2_disc)
788 return;
789 gsnpsid = dwc2_readl(hsotg, GSNPSID);
790 /*
791 * eusb2_disc not supported by FS IOT devices.
792 * For other cores, it supported starting from version 5.00a
793 */
794 if ((gsnpsid & ~DWC2_CORE_REV_MASK) == DWC2_FS_IOT_ID ||
795 (gsnpsid & DWC2_CORE_REV_MASK) <
796 (DWC2_CORE_REV_5_00a & DWC2_CORE_REV_MASK)) {
797 hsotg->params.eusb2_disc = false;
798 return;
799 }
800}
801
802#define CHECK_RANGE(_param, _min, _max, _def) do { \
803 if ((int)(hsotg->params._param) < (_min) || \
804 (hsotg->params._param) > (_max)) { \
805 dev_warn(hsotg->dev, "%s: Invalid parameter %s=%d\n", \
806 __func__, #_param, hsotg->params._param); \
807 hsotg->params._param = (_def); \
808 } \
809 } while (0)
810
811#define CHECK_BOOL(_param, _check) do { \
812 if (hsotg->params._param && !(_check)) { \
813 dev_warn(hsotg->dev, "%s: Invalid parameter %s=%d\n", \
814 __func__, #_param, hsotg->params._param); \
815 hsotg->params._param = false; \
816 } \
817 } while (0)
818
819static void dwc2_check_params(struct dwc2_hsotg *hsotg)
820{
821 struct dwc2_hw_params *hw = &hsotg->hw_params;
822 struct dwc2_core_params *p = &hsotg->params;
823 bool dma_capable = !(hw->arch == GHWCFG2_SLAVE_ONLY_ARCH);
824
825 dwc2_check_param_otg_cap(hsotg);
826 dwc2_check_param_phy_type(hsotg);
827 dwc2_check_param_speed(hsotg);
828 dwc2_check_param_phy_utmi_width(hsotg);
829 dwc2_check_param_power_down(hsotg);
830 dwc2_check_param_eusb2_disc(hsotg);
831
832 CHECK_BOOL(enable_dynamic_fifo, hw->enable_dynamic_fifo);
833 CHECK_BOOL(en_multiple_tx_fifo, hw->en_multiple_tx_fifo);
834 CHECK_BOOL(i2c_enable, hw->i2c_enable);
835 CHECK_BOOL(ipg_isoc_en, hw->ipg_isoc_en);
836 CHECK_BOOL(acg_enable, hw->acg_enable);
837 CHECK_BOOL(reload_ctl, (hsotg->hw_params.snpsid > DWC2_CORE_REV_2_92a));
838 CHECK_BOOL(lpm, (hsotg->hw_params.snpsid >= DWC2_CORE_REV_2_80a));
839 CHECK_BOOL(lpm, hw->lpm_mode);
840 CHECK_BOOL(lpm_clock_gating, hsotg->params.lpm);
841 CHECK_BOOL(besl, hsotg->params.lpm);
842 CHECK_BOOL(besl, (hsotg->hw_params.snpsid >= DWC2_CORE_REV_3_00a));
843 CHECK_BOOL(hird_threshold_en, hsotg->params.lpm);
844 CHECK_RANGE(hird_threshold, 0, hsotg->params.besl ? 12 : 7, 0);
845 CHECK_BOOL(service_interval, hw->service_interval_mode);
846 CHECK_RANGE(max_packet_count,
847 15, hw->max_packet_count,
848 hw->max_packet_count);
849 CHECK_RANGE(max_transfer_size,
850 2047, hw->max_transfer_size,
851 hw->max_transfer_size);
852
853 if ((hsotg->dr_mode == USB_DR_MODE_HOST) ||
854 (hsotg->dr_mode == USB_DR_MODE_OTG)) {
855 CHECK_BOOL(host_dma, dma_capable);
856 CHECK_BOOL(dma_desc_enable, p->host_dma);
857 CHECK_BOOL(dma_desc_fs_enable, p->dma_desc_enable);
858 CHECK_BOOL(host_ls_low_power_phy_clk,
859 p->phy_type == DWC2_PHY_TYPE_PARAM_FS);
860 CHECK_RANGE(host_channels,
861 1, hw->host_channels,
862 hw->host_channels);
863 CHECK_RANGE(host_rx_fifo_size,
864 16, hw->rx_fifo_size,
865 hw->rx_fifo_size);
866 CHECK_RANGE(host_nperio_tx_fifo_size,
867 16, hw->host_nperio_tx_fifo_size,
868 hw->host_nperio_tx_fifo_size);
869 CHECK_RANGE(host_perio_tx_fifo_size,
870 16, hw->host_perio_tx_fifo_size,
871 hw->host_perio_tx_fifo_size);
872 }
873
874 if ((hsotg->dr_mode == USB_DR_MODE_PERIPHERAL) ||
875 (hsotg->dr_mode == USB_DR_MODE_OTG)) {
876 CHECK_BOOL(g_dma, dma_capable);
877 CHECK_BOOL(g_dma_desc, (p->g_dma && hw->dma_desc_enable));
878 CHECK_RANGE(g_rx_fifo_size,
879 16, hw->rx_fifo_size,
880 hw->rx_fifo_size);
881 CHECK_RANGE(g_np_tx_fifo_size,
882 16, hw->dev_nperio_tx_fifo_size,
883 hw->dev_nperio_tx_fifo_size);
884 dwc2_check_param_tx_fifo_sizes(hsotg);
885 }
886}
887
888/*
889 * Gets host hardware parameters. Forces host mode if not currently in
890 * host mode. Should be called immediately after a core soft reset in
891 * order to get the reset values.
892 */
893static void dwc2_get_host_hwparams(struct dwc2_hsotg *hsotg)
894{
895 struct dwc2_hw_params *hw = &hsotg->hw_params;
896 u32 gnptxfsiz;
897 u32 hptxfsiz;
898
899 if (hsotg->dr_mode == USB_DR_MODE_PERIPHERAL)
900 return;
901
902 dwc2_force_mode(hsotg, true);
903
904 gnptxfsiz = dwc2_readl(hsotg, GNPTXFSIZ);
905 hptxfsiz = dwc2_readl(hsotg, HPTXFSIZ);
906
907 hw->host_nperio_tx_fifo_size = (gnptxfsiz & FIFOSIZE_DEPTH_MASK) >>
908 FIFOSIZE_DEPTH_SHIFT;
909 hw->host_perio_tx_fifo_size = (hptxfsiz & FIFOSIZE_DEPTH_MASK) >>
910 FIFOSIZE_DEPTH_SHIFT;
911}
912
913/*
914 * Gets device hardware parameters. Forces device mode if not
915 * currently in device mode. Should be called immediately after a core
916 * soft reset in order to get the reset values.
917 */
918static void dwc2_get_dev_hwparams(struct dwc2_hsotg *hsotg)
919{
920 struct dwc2_hw_params *hw = &hsotg->hw_params;
921 u32 gnptxfsiz;
922 int fifo, fifo_count;
923
924 if (hsotg->dr_mode == USB_DR_MODE_HOST)
925 return;
926
927 dwc2_force_mode(hsotg, false);
928
929 gnptxfsiz = dwc2_readl(hsotg, GNPTXFSIZ);
930
931 fifo_count = dwc2_hsotg_tx_fifo_count(hsotg);
932
933 for (fifo = 1; fifo <= fifo_count; fifo++) {
934 hw->g_tx_fifo_size[fifo] =
935 (dwc2_readl(hsotg, DPTXFSIZN(fifo)) &
936 FIFOSIZE_DEPTH_MASK) >> FIFOSIZE_DEPTH_SHIFT;
937 }
938
939 hw->dev_nperio_tx_fifo_size = (gnptxfsiz & FIFOSIZE_DEPTH_MASK) >>
940 FIFOSIZE_DEPTH_SHIFT;
941}
942
943/**
944 * dwc2_get_hwparams() - During device initialization, read various hardware
945 * configuration registers and interpret the contents.
946 *
947 * @hsotg: Programming view of the DWC_otg controller
948 *
949 */
950int dwc2_get_hwparams(struct dwc2_hsotg *hsotg)
951{
952 struct dwc2_hw_params *hw = &hsotg->hw_params;
953 unsigned int width;
954 u32 hwcfg1, hwcfg2, hwcfg3, hwcfg4;
955 u32 grxfsiz;
956
957 hwcfg1 = dwc2_readl(hsotg, GHWCFG1);
958 hwcfg2 = dwc2_readl(hsotg, GHWCFG2);
959 hwcfg3 = dwc2_readl(hsotg, GHWCFG3);
960 hwcfg4 = dwc2_readl(hsotg, GHWCFG4);
961 grxfsiz = dwc2_readl(hsotg, GRXFSIZ);
962
963 /* hwcfg1 */
964 hw->dev_ep_dirs = hwcfg1;
965
966 /* hwcfg2 */
967 hw->op_mode = (hwcfg2 & GHWCFG2_OP_MODE_MASK) >>
968 GHWCFG2_OP_MODE_SHIFT;
969 hw->arch = (hwcfg2 & GHWCFG2_ARCHITECTURE_MASK) >>
970 GHWCFG2_ARCHITECTURE_SHIFT;
971 hw->enable_dynamic_fifo = !!(hwcfg2 & GHWCFG2_DYNAMIC_FIFO);
972 hw->host_channels = 1 + ((hwcfg2 & GHWCFG2_NUM_HOST_CHAN_MASK) >>
973 GHWCFG2_NUM_HOST_CHAN_SHIFT);
974 hw->hs_phy_type = (hwcfg2 & GHWCFG2_HS_PHY_TYPE_MASK) >>
975 GHWCFG2_HS_PHY_TYPE_SHIFT;
976 hw->fs_phy_type = (hwcfg2 & GHWCFG2_FS_PHY_TYPE_MASK) >>
977 GHWCFG2_FS_PHY_TYPE_SHIFT;
978 hw->num_dev_ep = (hwcfg2 & GHWCFG2_NUM_DEV_EP_MASK) >>
979 GHWCFG2_NUM_DEV_EP_SHIFT;
980 hw->nperio_tx_q_depth =
981 (hwcfg2 & GHWCFG2_NONPERIO_TX_Q_DEPTH_MASK) >>
982 GHWCFG2_NONPERIO_TX_Q_DEPTH_SHIFT << 1;
983 hw->host_perio_tx_q_depth =
984 (hwcfg2 & GHWCFG2_HOST_PERIO_TX_Q_DEPTH_MASK) >>
985 GHWCFG2_HOST_PERIO_TX_Q_DEPTH_SHIFT << 1;
986 hw->dev_token_q_depth =
987 (hwcfg2 & GHWCFG2_DEV_TOKEN_Q_DEPTH_MASK) >>
988 GHWCFG2_DEV_TOKEN_Q_DEPTH_SHIFT;
989
990 /* hwcfg3 */
991 width = (hwcfg3 & GHWCFG3_XFER_SIZE_CNTR_WIDTH_MASK) >>
992 GHWCFG3_XFER_SIZE_CNTR_WIDTH_SHIFT;
993 hw->max_transfer_size = (1 << (width + 11)) - 1;
994 width = (hwcfg3 & GHWCFG3_PACKET_SIZE_CNTR_WIDTH_MASK) >>
995 GHWCFG3_PACKET_SIZE_CNTR_WIDTH_SHIFT;
996 hw->max_packet_count = (1 << (width + 4)) - 1;
997 hw->i2c_enable = !!(hwcfg3 & GHWCFG3_I2C);
998 hw->total_fifo_size = (hwcfg3 & GHWCFG3_DFIFO_DEPTH_MASK) >>
999 GHWCFG3_DFIFO_DEPTH_SHIFT;
1000 hw->lpm_mode = !!(hwcfg3 & GHWCFG3_OTG_LPM_EN);
1001
1002 /* hwcfg4 */
1003 hw->en_multiple_tx_fifo = !!(hwcfg4 & GHWCFG4_DED_FIFO_EN);
1004 hw->num_dev_perio_in_ep = (hwcfg4 & GHWCFG4_NUM_DEV_PERIO_IN_EP_MASK) >>
1005 GHWCFG4_NUM_DEV_PERIO_IN_EP_SHIFT;
1006 hw->num_dev_in_eps = (hwcfg4 & GHWCFG4_NUM_IN_EPS_MASK) >>
1007 GHWCFG4_NUM_IN_EPS_SHIFT;
1008 hw->dma_desc_enable = !!(hwcfg4 & GHWCFG4_DESC_DMA);
1009 hw->power_optimized = !!(hwcfg4 & GHWCFG4_POWER_OPTIMIZ);
1010 hw->hibernation = !!(hwcfg4 & GHWCFG4_HIBER);
1011 hw->utmi_phy_data_width = (hwcfg4 & GHWCFG4_UTMI_PHY_DATA_WIDTH_MASK) >>
1012 GHWCFG4_UTMI_PHY_DATA_WIDTH_SHIFT;
1013 hw->acg_enable = !!(hwcfg4 & GHWCFG4_ACG_SUPPORTED);
1014 hw->ipg_isoc_en = !!(hwcfg4 & GHWCFG4_IPG_ISOC_SUPPORTED);
1015 hw->service_interval_mode = !!(hwcfg4 &
1016 GHWCFG4_SERVICE_INTERVAL_SUPPORTED);
1017
1018 /* fifo sizes */
1019 hw->rx_fifo_size = (grxfsiz & GRXFSIZ_DEPTH_MASK) >>
1020 GRXFSIZ_DEPTH_SHIFT;
1021 /*
1022 * Host specific hardware parameters. Reading these parameters
1023 * requires the controller to be in host mode. The mode will
1024 * be forced, if necessary, to read these values.
1025 */
1026 dwc2_get_host_hwparams(hsotg);
1027 dwc2_get_dev_hwparams(hsotg);
1028
1029 return 0;
1030}
1031
1032static int dwc2_limit_speed(struct dwc2_hsotg *hsotg)
1033{
1034 enum usb_device_speed usb_speed;
1035
1036 usb_speed = usb_get_maximum_speed(hsotg->dev);
1037 switch (usb_speed) {
1038 case USB_SPEED_LOW:
1039 dev_err(hsotg->dev, "Maximum speed cannot be forced to low-speed\n");
1040 return -EINVAL;
1041 case USB_SPEED_FULL:
1042 if (hsotg->params.speed == DWC2_SPEED_PARAM_LOW)
1043 break;
1044 hsotg->params.speed = DWC2_SPEED_PARAM_FULL;
1045 break;
1046 default:
1047 break;
1048 }
1049
1050 return 0;
1051}
1052
1053typedef void (*set_params_cb)(struct dwc2_hsotg *data);
1054
1055int dwc2_init_params(struct dwc2_hsotg *hsotg)
1056{
1057 set_params_cb set_params;
1058 int ret;
1059
1060 dwc2_set_default_params(hsotg);
1061 dwc2_get_device_properties(hsotg);
1062
1063 set_params = device_get_match_data(hsotg->dev);
1064 if (set_params) {
1065 set_params(hsotg);
1066 } else {
1067 const struct pci_device_id *pmatch =
1068 pci_match_id(dwc2_pci_ids, to_pci_dev(hsotg->dev->parent));
1069
1070 if (pmatch && pmatch->driver_data) {
1071 set_params = (set_params_cb)pmatch->driver_data;
1072 set_params(hsotg);
1073 }
1074 }
1075
1076 ret = dwc2_limit_speed(hsotg);
1077 if (ret)
1078 return ret;
1079
1080 dwc2_check_params(hsotg);
1081
1082 return 0;
1083}