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1/*
2 * Copyright (C) 2004-2016 Synopsys, Inc.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions, and the following disclaimer,
9 * without modification.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. The names of the above-listed copyright holders may not be used
14 * to endorse or promote products derived from this software without
15 * specific prior written permission.
16 *
17 * ALTERNATIVELY, this software may be distributed under the terms of the
18 * GNU General Public License ("GPL") as published by the Free Software
19 * Foundation; either version 2 of the License, or (at your option) any
20 * later version.
21 *
22 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
23 * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
24 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
25 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
26 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
27 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
28 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
29 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
30 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
31 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
32 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
33 */
34
35#include <linux/kernel.h>
36#include <linux/module.h>
37#include <linux/of_device.h>
38
39#include "core.h"
40
41static const struct dwc2_core_params params_hi6220 = {
42 .otg_cap = 2, /* No HNP/SRP capable */
43 .otg_ver = 0, /* 1.3 */
44 .dma_desc_enable = 0,
45 .dma_desc_fs_enable = 0,
46 .speed = 0, /* High Speed */
47 .enable_dynamic_fifo = 1,
48 .en_multiple_tx_fifo = 1,
49 .host_rx_fifo_size = 512,
50 .host_nperio_tx_fifo_size = 512,
51 .host_perio_tx_fifo_size = 512,
52 .max_transfer_size = 65535,
53 .max_packet_count = 511,
54 .host_channels = 16,
55 .phy_type = 1, /* UTMI */
56 .phy_utmi_width = 8,
57 .phy_ulpi_ddr = 0, /* Single */
58 .phy_ulpi_ext_vbus = 0,
59 .i2c_enable = 0,
60 .ulpi_fs_ls = 0,
61 .host_support_fs_ls_low_power = 0,
62 .host_ls_low_power_phy_clk = 0, /* 48 MHz */
63 .ts_dline = 0,
64 .reload_ctl = 0,
65 .ahbcfg = GAHBCFG_HBSTLEN_INCR16 <<
66 GAHBCFG_HBSTLEN_SHIFT,
67 .uframe_sched = 0,
68 .external_id_pin_ctl = -1,
69 .hibernation = -1,
70};
71
72static const struct dwc2_core_params params_bcm2835 = {
73 .otg_cap = 0, /* HNP/SRP capable */
74 .otg_ver = 0, /* 1.3 */
75 .dma_desc_enable = 0,
76 .dma_desc_fs_enable = 0,
77 .speed = 0, /* High Speed */
78 .enable_dynamic_fifo = 1,
79 .en_multiple_tx_fifo = 1,
80 .host_rx_fifo_size = 774, /* 774 DWORDs */
81 .host_nperio_tx_fifo_size = 256, /* 256 DWORDs */
82 .host_perio_tx_fifo_size = 512, /* 512 DWORDs */
83 .max_transfer_size = 65535,
84 .max_packet_count = 511,
85 .host_channels = 8,
86 .phy_type = 1, /* UTMI */
87 .phy_utmi_width = 8, /* 8 bits */
88 .phy_ulpi_ddr = 0, /* Single */
89 .phy_ulpi_ext_vbus = 0,
90 .i2c_enable = 0,
91 .ulpi_fs_ls = 0,
92 .host_support_fs_ls_low_power = 0,
93 .host_ls_low_power_phy_clk = 0, /* 48 MHz */
94 .ts_dline = 0,
95 .reload_ctl = 0,
96 .ahbcfg = 0x10,
97 .uframe_sched = 0,
98 .external_id_pin_ctl = -1,
99 .hibernation = -1,
100};
101
102static const struct dwc2_core_params params_rk3066 = {
103 .otg_cap = 2, /* non-HNP/non-SRP */
104 .otg_ver = -1,
105 .dma_desc_enable = 0,
106 .dma_desc_fs_enable = 0,
107 .speed = -1,
108 .enable_dynamic_fifo = 1,
109 .en_multiple_tx_fifo = -1,
110 .host_rx_fifo_size = 525, /* 525 DWORDs */
111 .host_nperio_tx_fifo_size = 128, /* 128 DWORDs */
112 .host_perio_tx_fifo_size = 256, /* 256 DWORDs */
113 .max_transfer_size = -1,
114 .max_packet_count = -1,
115 .host_channels = -1,
116 .phy_type = -1,
117 .phy_utmi_width = -1,
118 .phy_ulpi_ddr = -1,
119 .phy_ulpi_ext_vbus = -1,
120 .i2c_enable = -1,
121 .ulpi_fs_ls = -1,
122 .host_support_fs_ls_low_power = -1,
123 .host_ls_low_power_phy_clk = -1,
124 .ts_dline = -1,
125 .reload_ctl = -1,
126 .ahbcfg = GAHBCFG_HBSTLEN_INCR16 <<
127 GAHBCFG_HBSTLEN_SHIFT,
128 .uframe_sched = -1,
129 .external_id_pin_ctl = -1,
130 .hibernation = -1,
131};
132
133static const struct dwc2_core_params params_ltq = {
134 .otg_cap = 2, /* non-HNP/non-SRP */
135 .otg_ver = -1,
136 .dma_desc_enable = -1,
137 .dma_desc_fs_enable = -1,
138 .speed = -1,
139 .enable_dynamic_fifo = -1,
140 .en_multiple_tx_fifo = -1,
141 .host_rx_fifo_size = 288, /* 288 DWORDs */
142 .host_nperio_tx_fifo_size = 128, /* 128 DWORDs */
143 .host_perio_tx_fifo_size = 96, /* 96 DWORDs */
144 .max_transfer_size = 65535,
145 .max_packet_count = 511,
146 .host_channels = -1,
147 .phy_type = -1,
148 .phy_utmi_width = -1,
149 .phy_ulpi_ddr = -1,
150 .phy_ulpi_ext_vbus = -1,
151 .i2c_enable = -1,
152 .ulpi_fs_ls = -1,
153 .host_support_fs_ls_low_power = -1,
154 .host_ls_low_power_phy_clk = -1,
155 .ts_dline = -1,
156 .reload_ctl = -1,
157 .ahbcfg = GAHBCFG_HBSTLEN_INCR16 <<
158 GAHBCFG_HBSTLEN_SHIFT,
159 .uframe_sched = -1,
160 .external_id_pin_ctl = -1,
161 .hibernation = -1,
162};
163
164static const struct dwc2_core_params params_amlogic = {
165 .otg_cap = DWC2_CAP_PARAM_NO_HNP_SRP_CAPABLE,
166 .otg_ver = -1,
167 .dma_desc_enable = 0,
168 .dma_desc_fs_enable = 0,
169 .speed = DWC2_SPEED_PARAM_HIGH,
170 .enable_dynamic_fifo = 1,
171 .en_multiple_tx_fifo = -1,
172 .host_rx_fifo_size = 512,
173 .host_nperio_tx_fifo_size = 500,
174 .host_perio_tx_fifo_size = 500,
175 .max_transfer_size = -1,
176 .max_packet_count = -1,
177 .host_channels = 16,
178 .phy_type = DWC2_PHY_TYPE_PARAM_UTMI,
179 .phy_utmi_width = -1,
180 .phy_ulpi_ddr = -1,
181 .phy_ulpi_ext_vbus = -1,
182 .i2c_enable = -1,
183 .ulpi_fs_ls = -1,
184 .host_support_fs_ls_low_power = -1,
185 .host_ls_low_power_phy_clk = -1,
186 .ts_dline = -1,
187 .reload_ctl = 1,
188 .ahbcfg = GAHBCFG_HBSTLEN_INCR8 <<
189 GAHBCFG_HBSTLEN_SHIFT,
190 .uframe_sched = 0,
191 .external_id_pin_ctl = -1,
192 .hibernation = -1,
193};
194
195static const struct dwc2_core_params params_default = {
196 .otg_cap = -1,
197 .otg_ver = -1,
198
199 /*
200 * Disable descriptor dma mode by default as the HW can support
201 * it, but does not support it for SPLIT transactions.
202 * Disable it for FS devices as well.
203 */
204 .dma_desc_enable = 0,
205 .dma_desc_fs_enable = 0,
206
207 .speed = -1,
208 .enable_dynamic_fifo = -1,
209 .en_multiple_tx_fifo = -1,
210 .host_rx_fifo_size = -1,
211 .host_nperio_tx_fifo_size = -1,
212 .host_perio_tx_fifo_size = -1,
213 .max_transfer_size = -1,
214 .max_packet_count = -1,
215 .host_channels = -1,
216 .phy_type = -1,
217 .phy_utmi_width = -1,
218 .phy_ulpi_ddr = -1,
219 .phy_ulpi_ext_vbus = -1,
220 .i2c_enable = -1,
221 .ulpi_fs_ls = -1,
222 .host_support_fs_ls_low_power = -1,
223 .host_ls_low_power_phy_clk = -1,
224 .ts_dline = -1,
225 .reload_ctl = -1,
226 .ahbcfg = -1,
227 .uframe_sched = -1,
228 .external_id_pin_ctl = -1,
229 .hibernation = -1,
230};
231
232const struct of_device_id dwc2_of_match_table[] = {
233 { .compatible = "brcm,bcm2835-usb", .data = ¶ms_bcm2835 },
234 { .compatible = "hisilicon,hi6220-usb", .data = ¶ms_hi6220 },
235 { .compatible = "rockchip,rk3066-usb", .data = ¶ms_rk3066 },
236 { .compatible = "lantiq,arx100-usb", .data = ¶ms_ltq },
237 { .compatible = "lantiq,xrx200-usb", .data = ¶ms_ltq },
238 { .compatible = "snps,dwc2", .data = NULL },
239 { .compatible = "samsung,s3c6400-hsotg", .data = NULL},
240 { .compatible = "amlogic,meson8b-usb", .data = ¶ms_amlogic },
241 { .compatible = "amlogic,meson-gxbb-usb", .data = ¶ms_amlogic },
242 { .compatible = "amcc,dwc-otg", .data = NULL },
243 {},
244};
245MODULE_DEVICE_TABLE(of, dwc2_of_match_table);
246
247static void dwc2_get_device_property(struct dwc2_hsotg *hsotg,
248 char *property, u8 size, u64 *value)
249{
250 u32 val32;
251
252 switch (size) {
253 case 0:
254 *value = device_property_read_bool(hsotg->dev, property);
255 break;
256 case 1:
257 case 2:
258 case 4:
259 if (device_property_read_u32(hsotg->dev, property, &val32))
260 return;
261
262 *value = val32;
263 break;
264 case 8:
265 if (device_property_read_u64(hsotg->dev, property, value))
266 return;
267
268 break;
269 default:
270 /*
271 * The size is checked by the only function that calls
272 * this so this should never happen.
273 */
274 WARN_ON(1);
275 return;
276 }
277}
278
279static void dwc2_set_core_param(void *param, u8 size, u64 value)
280{
281 switch (size) {
282 case 0:
283 *((bool *)param) = !!value;
284 break;
285 case 1:
286 *((u8 *)param) = (u8)value;
287 break;
288 case 2:
289 *((u16 *)param) = (u16)value;
290 break;
291 case 4:
292 *((u32 *)param) = (u32)value;
293 break;
294 case 8:
295 *((u64 *)param) = (u64)value;
296 break;
297 default:
298 /*
299 * The size is checked by the only function that calls
300 * this so this should never happen.
301 */
302 WARN_ON(1);
303 return;
304 }
305}
306
307/**
308 * dwc2_set_param() - Set a core parameter
309 *
310 * @hsotg: Programming view of the DWC_otg controller
311 * @param: Pointer to the parameter to set
312 * @lookup: True if the property should be looked up
313 * @property: The device property to read
314 * @legacy: The param value to set if @property is not available. This
315 * will typically be the legacy value set in the static
316 * params structure.
317 * @def: The default value
318 * @min: The minimum value
319 * @max: The maximum value
320 * @size: The size of the core parameter in bytes, or 0 for bool.
321 *
322 * This function looks up @property and sets the @param to that value.
323 * If the property doesn't exist it uses the passed-in @value. It will
324 * verify that the value falls between @min and @max. If it doesn't,
325 * it will output an error and set the parameter to either @def or,
326 * failing that, to @min.
327 *
328 * The @size is used to write to @param and to query the device
329 * properties so that this same function can be used with different
330 * types of parameters.
331 */
332static void dwc2_set_param(struct dwc2_hsotg *hsotg, void *param,
333 bool lookup, char *property, u64 legacy,
334 u64 def, u64 min, u64 max, u8 size)
335{
336 u64 sizemax;
337 u64 value;
338
339 if (WARN_ON(!hsotg || !param || !property))
340 return;
341
342 if (WARN((size > 8) || ((size & (size - 1)) != 0),
343 "Invalid size %d for %s\n", size, property))
344 return;
345
346 dev_vdbg(hsotg->dev, "%s: Setting %s: legacy=%llu, def=%llu, min=%llu, max=%llu, size=%d\n",
347 __func__, property, legacy, def, min, max, size);
348
349 sizemax = (1ULL << (size * 8)) - 1;
350 value = legacy;
351
352 /* Override legacy settings. */
353 if (lookup)
354 dwc2_get_device_property(hsotg, property, size, &value);
355
356 /*
357 * While the value is not valid, try setting it to the default
358 * value, and failing that, set it to the minimum.
359 */
360 while ((value < min) || (value > max)) {
361 /* Print an error unless the value is set to auto. */
362 if (value != sizemax)
363 dev_err(hsotg->dev, "Invalid value %llu for param %s\n",
364 value, property);
365
366 /*
367 * If we are already the default, just set it to the
368 * minimum.
369 */
370 if (value == def) {
371 dev_vdbg(hsotg->dev, "%s: setting value to min=%llu\n",
372 __func__, min);
373 value = min;
374 break;
375 }
376
377 /* Try the default value */
378 dev_vdbg(hsotg->dev, "%s: setting value to default=%llu\n",
379 __func__, def);
380 value = def;
381 }
382
383 dev_dbg(hsotg->dev, "Setting %s to %llu\n", property, value);
384 dwc2_set_core_param(param, size, value);
385}
386
387/**
388 * dwc2_set_param_u32() - Set a u32 parameter
389 *
390 * See dwc2_set_param().
391 */
392static void dwc2_set_param_u32(struct dwc2_hsotg *hsotg, u32 *param,
393 bool lookup, char *property, u16 legacy,
394 u16 def, u16 min, u16 max)
395{
396 dwc2_set_param(hsotg, param, lookup, property,
397 legacy, def, min, max, 4);
398}
399
400/**
401 * dwc2_set_param_bool() - Set a bool parameter
402 *
403 * See dwc2_set_param().
404 *
405 * Note: there is no 'legacy' argument here because there is no legacy
406 * source of bool params.
407 */
408static void dwc2_set_param_bool(struct dwc2_hsotg *hsotg, bool *param,
409 bool lookup, char *property,
410 bool def, bool min, bool max)
411{
412 dwc2_set_param(hsotg, param, lookup, property,
413 def, def, min, max, 0);
414}
415
416#define DWC2_OUT_OF_BOUNDS(a, b, c) ((a) < (b) || (a) > (c))
417
418/* Parameter access functions */
419static void dwc2_set_param_otg_cap(struct dwc2_hsotg *hsotg, int val)
420{
421 int valid = 1;
422
423 switch (val) {
424 case DWC2_CAP_PARAM_HNP_SRP_CAPABLE:
425 if (hsotg->hw_params.op_mode != GHWCFG2_OP_MODE_HNP_SRP_CAPABLE)
426 valid = 0;
427 break;
428 case DWC2_CAP_PARAM_SRP_ONLY_CAPABLE:
429 switch (hsotg->hw_params.op_mode) {
430 case GHWCFG2_OP_MODE_HNP_SRP_CAPABLE:
431 case GHWCFG2_OP_MODE_SRP_ONLY_CAPABLE:
432 case GHWCFG2_OP_MODE_SRP_CAPABLE_DEVICE:
433 case GHWCFG2_OP_MODE_SRP_CAPABLE_HOST:
434 break;
435 default:
436 valid = 0;
437 break;
438 }
439 break;
440 case DWC2_CAP_PARAM_NO_HNP_SRP_CAPABLE:
441 /* always valid */
442 break;
443 default:
444 valid = 0;
445 break;
446 }
447
448 if (!valid) {
449 if (val >= 0)
450 dev_err(hsotg->dev,
451 "%d invalid for otg_cap parameter. Check HW configuration.\n",
452 val);
453 switch (hsotg->hw_params.op_mode) {
454 case GHWCFG2_OP_MODE_HNP_SRP_CAPABLE:
455 val = DWC2_CAP_PARAM_HNP_SRP_CAPABLE;
456 break;
457 case GHWCFG2_OP_MODE_SRP_ONLY_CAPABLE:
458 case GHWCFG2_OP_MODE_SRP_CAPABLE_DEVICE:
459 case GHWCFG2_OP_MODE_SRP_CAPABLE_HOST:
460 val = DWC2_CAP_PARAM_SRP_ONLY_CAPABLE;
461 break;
462 default:
463 val = DWC2_CAP_PARAM_NO_HNP_SRP_CAPABLE;
464 break;
465 }
466 dev_dbg(hsotg->dev, "Setting otg_cap to %d\n", val);
467 }
468
469 hsotg->params.otg_cap = val;
470}
471
472static void dwc2_set_param_dma_desc_enable(struct dwc2_hsotg *hsotg, int val)
473{
474 int valid = 1;
475
476 if (val > 0 && (hsotg->params.host_dma <= 0 ||
477 !hsotg->hw_params.dma_desc_enable))
478 valid = 0;
479 if (val < 0)
480 valid = 0;
481
482 if (!valid) {
483 if (val >= 0)
484 dev_err(hsotg->dev,
485 "%d invalid for dma_desc_enable parameter. Check HW configuration.\n",
486 val);
487 val = (hsotg->params.host_dma > 0 &&
488 hsotg->hw_params.dma_desc_enable);
489 dev_dbg(hsotg->dev, "Setting dma_desc_enable to %d\n", val);
490 }
491
492 hsotg->params.dma_desc_enable = val;
493}
494
495static void dwc2_set_param_dma_desc_fs_enable(struct dwc2_hsotg *hsotg, int val)
496{
497 int valid = 1;
498
499 if (val > 0 && (hsotg->params.host_dma <= 0 ||
500 !hsotg->hw_params.dma_desc_enable))
501 valid = 0;
502 if (val < 0)
503 valid = 0;
504
505 if (!valid) {
506 if (val >= 0)
507 dev_err(hsotg->dev,
508 "%d invalid for dma_desc_fs_enable parameter. Check HW configuration.\n",
509 val);
510 val = (hsotg->params.host_dma > 0 &&
511 hsotg->hw_params.dma_desc_enable);
512 }
513
514 hsotg->params.dma_desc_fs_enable = val;
515 dev_dbg(hsotg->dev, "Setting dma_desc_fs_enable to %d\n", val);
516}
517
518static void
519dwc2_set_param_host_support_fs_ls_low_power(struct dwc2_hsotg *hsotg,
520 int val)
521{
522 if (DWC2_OUT_OF_BOUNDS(val, 0, 1)) {
523 if (val >= 0) {
524 dev_err(hsotg->dev,
525 "Wrong value for host_support_fs_low_power\n");
526 dev_err(hsotg->dev,
527 "host_support_fs_low_power must be 0 or 1\n");
528 }
529 val = 0;
530 dev_dbg(hsotg->dev,
531 "Setting host_support_fs_low_power to %d\n", val);
532 }
533
534 hsotg->params.host_support_fs_ls_low_power = val;
535}
536
537static void dwc2_set_param_enable_dynamic_fifo(struct dwc2_hsotg *hsotg,
538 int val)
539{
540 int valid = 1;
541
542 if (val > 0 && !hsotg->hw_params.enable_dynamic_fifo)
543 valid = 0;
544 if (val < 0)
545 valid = 0;
546
547 if (!valid) {
548 if (val >= 0)
549 dev_err(hsotg->dev,
550 "%d invalid for enable_dynamic_fifo parameter. Check HW configuration.\n",
551 val);
552 val = hsotg->hw_params.enable_dynamic_fifo;
553 dev_dbg(hsotg->dev, "Setting enable_dynamic_fifo to %d\n", val);
554 }
555
556 hsotg->params.enable_dynamic_fifo = val;
557}
558
559static void dwc2_set_param_host_rx_fifo_size(struct dwc2_hsotg *hsotg, int val)
560{
561 int valid = 1;
562
563 if (val < 16 || val > hsotg->hw_params.rx_fifo_size)
564 valid = 0;
565
566 if (!valid) {
567 if (val >= 0)
568 dev_err(hsotg->dev,
569 "%d invalid for host_rx_fifo_size. Check HW configuration.\n",
570 val);
571 val = hsotg->hw_params.rx_fifo_size;
572 dev_dbg(hsotg->dev, "Setting host_rx_fifo_size to %d\n", val);
573 }
574
575 hsotg->params.host_rx_fifo_size = val;
576}
577
578static void dwc2_set_param_host_nperio_tx_fifo_size(struct dwc2_hsotg *hsotg,
579 int val)
580{
581 int valid = 1;
582
583 if (val < 16 || val > hsotg->hw_params.host_nperio_tx_fifo_size)
584 valid = 0;
585
586 if (!valid) {
587 if (val >= 0)
588 dev_err(hsotg->dev,
589 "%d invalid for host_nperio_tx_fifo_size. Check HW configuration.\n",
590 val);
591 val = hsotg->hw_params.host_nperio_tx_fifo_size;
592 dev_dbg(hsotg->dev, "Setting host_nperio_tx_fifo_size to %d\n",
593 val);
594 }
595
596 hsotg->params.host_nperio_tx_fifo_size = val;
597}
598
599static void dwc2_set_param_host_perio_tx_fifo_size(struct dwc2_hsotg *hsotg,
600 int val)
601{
602 int valid = 1;
603
604 if (val < 16 || val > hsotg->hw_params.host_perio_tx_fifo_size)
605 valid = 0;
606
607 if (!valid) {
608 if (val >= 0)
609 dev_err(hsotg->dev,
610 "%d invalid for host_perio_tx_fifo_size. Check HW configuration.\n",
611 val);
612 val = hsotg->hw_params.host_perio_tx_fifo_size;
613 dev_dbg(hsotg->dev, "Setting host_perio_tx_fifo_size to %d\n",
614 val);
615 }
616
617 hsotg->params.host_perio_tx_fifo_size = val;
618}
619
620static void dwc2_set_param_max_transfer_size(struct dwc2_hsotg *hsotg, int val)
621{
622 int valid = 1;
623
624 if (val < 2047 || val > hsotg->hw_params.max_transfer_size)
625 valid = 0;
626
627 if (!valid) {
628 if (val >= 0)
629 dev_err(hsotg->dev,
630 "%d invalid for max_transfer_size. Check HW configuration.\n",
631 val);
632 val = hsotg->hw_params.max_transfer_size;
633 dev_dbg(hsotg->dev, "Setting max_transfer_size to %d\n", val);
634 }
635
636 hsotg->params.max_transfer_size = val;
637}
638
639static void dwc2_set_param_max_packet_count(struct dwc2_hsotg *hsotg, int val)
640{
641 int valid = 1;
642
643 if (val < 15 || val > hsotg->hw_params.max_packet_count)
644 valid = 0;
645
646 if (!valid) {
647 if (val >= 0)
648 dev_err(hsotg->dev,
649 "%d invalid for max_packet_count. Check HW configuration.\n",
650 val);
651 val = hsotg->hw_params.max_packet_count;
652 dev_dbg(hsotg->dev, "Setting max_packet_count to %d\n", val);
653 }
654
655 hsotg->params.max_packet_count = val;
656}
657
658static void dwc2_set_param_host_channels(struct dwc2_hsotg *hsotg, int val)
659{
660 int valid = 1;
661
662 if (val < 1 || val > hsotg->hw_params.host_channels)
663 valid = 0;
664
665 if (!valid) {
666 if (val >= 0)
667 dev_err(hsotg->dev,
668 "%d invalid for host_channels. Check HW configuration.\n",
669 val);
670 val = hsotg->hw_params.host_channels;
671 dev_dbg(hsotg->dev, "Setting host_channels to %d\n", val);
672 }
673
674 hsotg->params.host_channels = val;
675}
676
677static void dwc2_set_param_phy_type(struct dwc2_hsotg *hsotg, int val)
678{
679 int valid = 0;
680 u32 hs_phy_type, fs_phy_type;
681
682 if (DWC2_OUT_OF_BOUNDS(val, DWC2_PHY_TYPE_PARAM_FS,
683 DWC2_PHY_TYPE_PARAM_ULPI)) {
684 if (val >= 0) {
685 dev_err(hsotg->dev, "Wrong value for phy_type\n");
686 dev_err(hsotg->dev, "phy_type must be 0, 1 or 2\n");
687 }
688
689 valid = 0;
690 }
691
692 hs_phy_type = hsotg->hw_params.hs_phy_type;
693 fs_phy_type = hsotg->hw_params.fs_phy_type;
694 if (val == DWC2_PHY_TYPE_PARAM_UTMI &&
695 (hs_phy_type == GHWCFG2_HS_PHY_TYPE_UTMI ||
696 hs_phy_type == GHWCFG2_HS_PHY_TYPE_UTMI_ULPI))
697 valid = 1;
698 else if (val == DWC2_PHY_TYPE_PARAM_ULPI &&
699 (hs_phy_type == GHWCFG2_HS_PHY_TYPE_ULPI ||
700 hs_phy_type == GHWCFG2_HS_PHY_TYPE_UTMI_ULPI))
701 valid = 1;
702 else if (val == DWC2_PHY_TYPE_PARAM_FS &&
703 fs_phy_type == GHWCFG2_FS_PHY_TYPE_DEDICATED)
704 valid = 1;
705
706 if (!valid) {
707 if (val >= 0)
708 dev_err(hsotg->dev,
709 "%d invalid for phy_type. Check HW configuration.\n",
710 val);
711 val = DWC2_PHY_TYPE_PARAM_FS;
712 if (hs_phy_type != GHWCFG2_HS_PHY_TYPE_NOT_SUPPORTED) {
713 if (hs_phy_type == GHWCFG2_HS_PHY_TYPE_UTMI ||
714 hs_phy_type == GHWCFG2_HS_PHY_TYPE_UTMI_ULPI)
715 val = DWC2_PHY_TYPE_PARAM_UTMI;
716 else
717 val = DWC2_PHY_TYPE_PARAM_ULPI;
718 }
719 dev_dbg(hsotg->dev, "Setting phy_type to %d\n", val);
720 }
721
722 hsotg->params.phy_type = val;
723}
724
725static int dwc2_get_param_phy_type(struct dwc2_hsotg *hsotg)
726{
727 return hsotg->params.phy_type;
728}
729
730static void dwc2_set_param_speed(struct dwc2_hsotg *hsotg, int val)
731{
732 int valid = 1;
733
734 if (DWC2_OUT_OF_BOUNDS(val, 0, 2)) {
735 if (val >= 0) {
736 dev_err(hsotg->dev, "Wrong value for speed parameter\n");
737 dev_err(hsotg->dev, "max_speed parameter must be 0, 1, or 2\n");
738 }
739 valid = 0;
740 }
741
742 if (dwc2_is_hs_iot(hsotg) &&
743 val == DWC2_SPEED_PARAM_LOW)
744 valid = 0;
745
746 if (val == DWC2_SPEED_PARAM_HIGH &&
747 dwc2_get_param_phy_type(hsotg) == DWC2_PHY_TYPE_PARAM_FS)
748 valid = 0;
749
750 if (!valid) {
751 if (val >= 0)
752 dev_err(hsotg->dev,
753 "%d invalid for speed parameter. Check HW configuration.\n",
754 val);
755 val = dwc2_get_param_phy_type(hsotg) == DWC2_PHY_TYPE_PARAM_FS ?
756 DWC2_SPEED_PARAM_FULL : DWC2_SPEED_PARAM_HIGH;
757 dev_dbg(hsotg->dev, "Setting speed to %d\n", val);
758 }
759
760 hsotg->params.speed = val;
761}
762
763static void dwc2_set_param_host_ls_low_power_phy_clk(struct dwc2_hsotg *hsotg,
764 int val)
765{
766 int valid = 1;
767
768 if (DWC2_OUT_OF_BOUNDS(val, DWC2_HOST_LS_LOW_POWER_PHY_CLK_PARAM_48MHZ,
769 DWC2_HOST_LS_LOW_POWER_PHY_CLK_PARAM_6MHZ)) {
770 if (val >= 0) {
771 dev_err(hsotg->dev,
772 "Wrong value for host_ls_low_power_phy_clk parameter\n");
773 dev_err(hsotg->dev,
774 "host_ls_low_power_phy_clk must be 0 or 1\n");
775 }
776 valid = 0;
777 }
778
779 if (val == DWC2_HOST_LS_LOW_POWER_PHY_CLK_PARAM_48MHZ &&
780 dwc2_get_param_phy_type(hsotg) == DWC2_PHY_TYPE_PARAM_FS)
781 valid = 0;
782
783 if (!valid) {
784 if (val >= 0)
785 dev_err(hsotg->dev,
786 "%d invalid for host_ls_low_power_phy_clk. Check HW configuration.\n",
787 val);
788 val = dwc2_get_param_phy_type(hsotg) == DWC2_PHY_TYPE_PARAM_FS
789 ? DWC2_HOST_LS_LOW_POWER_PHY_CLK_PARAM_6MHZ
790 : DWC2_HOST_LS_LOW_POWER_PHY_CLK_PARAM_48MHZ;
791 dev_dbg(hsotg->dev, "Setting host_ls_low_power_phy_clk to %d\n",
792 val);
793 }
794
795 hsotg->params.host_ls_low_power_phy_clk = val;
796}
797
798static void dwc2_set_param_phy_ulpi_ddr(struct dwc2_hsotg *hsotg, int val)
799{
800 if (DWC2_OUT_OF_BOUNDS(val, 0, 1)) {
801 if (val >= 0) {
802 dev_err(hsotg->dev, "Wrong value for phy_ulpi_ddr\n");
803 dev_err(hsotg->dev, "phy_upli_ddr must be 0 or 1\n");
804 }
805 val = 0;
806 dev_dbg(hsotg->dev, "Setting phy_upli_ddr to %d\n", val);
807 }
808
809 hsotg->params.phy_ulpi_ddr = val;
810}
811
812static void dwc2_set_param_phy_ulpi_ext_vbus(struct dwc2_hsotg *hsotg, int val)
813{
814 if (DWC2_OUT_OF_BOUNDS(val, 0, 1)) {
815 if (val >= 0) {
816 dev_err(hsotg->dev,
817 "Wrong value for phy_ulpi_ext_vbus\n");
818 dev_err(hsotg->dev,
819 "phy_ulpi_ext_vbus must be 0 or 1\n");
820 }
821 val = 0;
822 dev_dbg(hsotg->dev, "Setting phy_ulpi_ext_vbus to %d\n", val);
823 }
824
825 hsotg->params.phy_ulpi_ext_vbus = val;
826}
827
828static void dwc2_set_param_phy_utmi_width(struct dwc2_hsotg *hsotg, int val)
829{
830 int valid = 0;
831
832 switch (hsotg->hw_params.utmi_phy_data_width) {
833 case GHWCFG4_UTMI_PHY_DATA_WIDTH_8:
834 valid = (val == 8);
835 break;
836 case GHWCFG4_UTMI_PHY_DATA_WIDTH_16:
837 valid = (val == 16);
838 break;
839 case GHWCFG4_UTMI_PHY_DATA_WIDTH_8_OR_16:
840 valid = (val == 8 || val == 16);
841 break;
842 }
843
844 if (!valid) {
845 if (val >= 0) {
846 dev_err(hsotg->dev,
847 "%d invalid for phy_utmi_width. Check HW configuration.\n",
848 val);
849 }
850 val = (hsotg->hw_params.utmi_phy_data_width ==
851 GHWCFG4_UTMI_PHY_DATA_WIDTH_8) ? 8 : 16;
852 dev_dbg(hsotg->dev, "Setting phy_utmi_width to %d\n", val);
853 }
854
855 hsotg->params.phy_utmi_width = val;
856}
857
858static void dwc2_set_param_ulpi_fs_ls(struct dwc2_hsotg *hsotg, int val)
859{
860 if (DWC2_OUT_OF_BOUNDS(val, 0, 1)) {
861 if (val >= 0) {
862 dev_err(hsotg->dev, "Wrong value for ulpi_fs_ls\n");
863 dev_err(hsotg->dev, "ulpi_fs_ls must be 0 or 1\n");
864 }
865 val = 0;
866 dev_dbg(hsotg->dev, "Setting ulpi_fs_ls to %d\n", val);
867 }
868
869 hsotg->params.ulpi_fs_ls = val;
870}
871
872static void dwc2_set_param_ts_dline(struct dwc2_hsotg *hsotg, int val)
873{
874 if (DWC2_OUT_OF_BOUNDS(val, 0, 1)) {
875 if (val >= 0) {
876 dev_err(hsotg->dev, "Wrong value for ts_dline\n");
877 dev_err(hsotg->dev, "ts_dline must be 0 or 1\n");
878 }
879 val = 0;
880 dev_dbg(hsotg->dev, "Setting ts_dline to %d\n", val);
881 }
882
883 hsotg->params.ts_dline = val;
884}
885
886static void dwc2_set_param_i2c_enable(struct dwc2_hsotg *hsotg, int val)
887{
888 int valid = 1;
889
890 if (DWC2_OUT_OF_BOUNDS(val, 0, 1)) {
891 if (val >= 0) {
892 dev_err(hsotg->dev, "Wrong value for i2c_enable\n");
893 dev_err(hsotg->dev, "i2c_enable must be 0 or 1\n");
894 }
895
896 valid = 0;
897 }
898
899 if (val == 1 && !(hsotg->hw_params.i2c_enable))
900 valid = 0;
901
902 if (!valid) {
903 if (val >= 0)
904 dev_err(hsotg->dev,
905 "%d invalid for i2c_enable. Check HW configuration.\n",
906 val);
907 val = hsotg->hw_params.i2c_enable;
908 dev_dbg(hsotg->dev, "Setting i2c_enable to %d\n", val);
909 }
910
911 hsotg->params.i2c_enable = val;
912}
913
914static void dwc2_set_param_en_multiple_tx_fifo(struct dwc2_hsotg *hsotg,
915 int val)
916{
917 int valid = 1;
918
919 if (DWC2_OUT_OF_BOUNDS(val, 0, 1)) {
920 if (val >= 0) {
921 dev_err(hsotg->dev,
922 "Wrong value for en_multiple_tx_fifo,\n");
923 dev_err(hsotg->dev,
924 "en_multiple_tx_fifo must be 0 or 1\n");
925 }
926 valid = 0;
927 }
928
929 if (val == 1 && !hsotg->hw_params.en_multiple_tx_fifo)
930 valid = 0;
931
932 if (!valid) {
933 if (val >= 0)
934 dev_err(hsotg->dev,
935 "%d invalid for parameter en_multiple_tx_fifo. Check HW configuration.\n",
936 val);
937 val = hsotg->hw_params.en_multiple_tx_fifo;
938 dev_dbg(hsotg->dev, "Setting en_multiple_tx_fifo to %d\n", val);
939 }
940
941 hsotg->params.en_multiple_tx_fifo = val;
942}
943
944static void dwc2_set_param_reload_ctl(struct dwc2_hsotg *hsotg, int val)
945{
946 int valid = 1;
947
948 if (DWC2_OUT_OF_BOUNDS(val, 0, 1)) {
949 if (val >= 0) {
950 dev_err(hsotg->dev,
951 "'%d' invalid for parameter reload_ctl\n", val);
952 dev_err(hsotg->dev, "reload_ctl must be 0 or 1\n");
953 }
954 valid = 0;
955 }
956
957 if (val == 1 && hsotg->hw_params.snpsid < DWC2_CORE_REV_2_92a)
958 valid = 0;
959
960 if (!valid) {
961 if (val >= 0)
962 dev_err(hsotg->dev,
963 "%d invalid for parameter reload_ctl. Check HW configuration.\n",
964 val);
965 val = hsotg->hw_params.snpsid >= DWC2_CORE_REV_2_92a;
966 dev_dbg(hsotg->dev, "Setting reload_ctl to %d\n", val);
967 }
968
969 hsotg->params.reload_ctl = val;
970}
971
972static void dwc2_set_param_ahbcfg(struct dwc2_hsotg *hsotg, int val)
973{
974 if (val != -1)
975 hsotg->params.ahbcfg = val;
976 else
977 hsotg->params.ahbcfg = GAHBCFG_HBSTLEN_INCR4 <<
978 GAHBCFG_HBSTLEN_SHIFT;
979}
980
981static void dwc2_set_param_otg_ver(struct dwc2_hsotg *hsotg, int val)
982{
983 if (DWC2_OUT_OF_BOUNDS(val, 0, 1)) {
984 if (val >= 0) {
985 dev_err(hsotg->dev,
986 "'%d' invalid for parameter otg_ver\n", val);
987 dev_err(hsotg->dev,
988 "otg_ver must be 0 (for OTG 1.3 support) or 1 (for OTG 2.0 support)\n");
989 }
990 val = 0;
991 dev_dbg(hsotg->dev, "Setting otg_ver to %d\n", val);
992 }
993
994 hsotg->params.otg_ver = val;
995}
996
997static void dwc2_set_param_uframe_sched(struct dwc2_hsotg *hsotg, int val)
998{
999 if (DWC2_OUT_OF_BOUNDS(val, 0, 1)) {
1000 if (val >= 0) {
1001 dev_err(hsotg->dev,
1002 "'%d' invalid for parameter uframe_sched\n",
1003 val);
1004 dev_err(hsotg->dev, "uframe_sched must be 0 or 1\n");
1005 }
1006 val = 1;
1007 dev_dbg(hsotg->dev, "Setting uframe_sched to %d\n", val);
1008 }
1009
1010 hsotg->params.uframe_sched = val;
1011}
1012
1013static void dwc2_set_param_external_id_pin_ctl(struct dwc2_hsotg *hsotg,
1014 int val)
1015{
1016 if (DWC2_OUT_OF_BOUNDS(val, 0, 1)) {
1017 if (val >= 0) {
1018 dev_err(hsotg->dev,
1019 "'%d' invalid for parameter external_id_pin_ctl\n",
1020 val);
1021 dev_err(hsotg->dev, "external_id_pin_ctl must be 0 or 1\n");
1022 }
1023 val = 0;
1024 dev_dbg(hsotg->dev, "Setting external_id_pin_ctl to %d\n", val);
1025 }
1026
1027 hsotg->params.external_id_pin_ctl = val;
1028}
1029
1030static void dwc2_set_param_hibernation(struct dwc2_hsotg *hsotg,
1031 int val)
1032{
1033 if (DWC2_OUT_OF_BOUNDS(val, 0, 1)) {
1034 if (val >= 0) {
1035 dev_err(hsotg->dev,
1036 "'%d' invalid for parameter hibernation\n",
1037 val);
1038 dev_err(hsotg->dev, "hibernation must be 0 or 1\n");
1039 }
1040 val = 0;
1041 dev_dbg(hsotg->dev, "Setting hibernation to %d\n", val);
1042 }
1043
1044 hsotg->params.hibernation = val;
1045}
1046
1047static void dwc2_set_param_tx_fifo_sizes(struct dwc2_hsotg *hsotg)
1048{
1049 int i;
1050 int num;
1051 char *property = "g-tx-fifo-size";
1052 struct dwc2_core_params *p = &hsotg->params;
1053
1054 memset(p->g_tx_fifo_size, 0, sizeof(p->g_tx_fifo_size));
1055
1056 /* Read tx fifo sizes */
1057 num = device_property_read_u32_array(hsotg->dev, property, NULL, 0);
1058
1059 if (num > 0) {
1060 device_property_read_u32_array(hsotg->dev, property,
1061 &p->g_tx_fifo_size[1],
1062 num);
1063 } else {
1064 u32 p_tx_fifo[] = DWC2_G_P_LEGACY_TX_FIFO_SIZE;
1065
1066 memcpy(&p->g_tx_fifo_size[1],
1067 p_tx_fifo,
1068 sizeof(p_tx_fifo));
1069
1070 num = ARRAY_SIZE(p_tx_fifo);
1071 }
1072
1073 for (i = 0; i < num; i++) {
1074 if ((i + 1) >= ARRAY_SIZE(p->g_tx_fifo_size))
1075 break;
1076
1077 dev_dbg(hsotg->dev, "Setting %s[%d] to %d\n",
1078 property, i + 1, p->g_tx_fifo_size[i + 1]);
1079 }
1080}
1081
1082static void dwc2_set_gadget_dma(struct dwc2_hsotg *hsotg)
1083{
1084 struct dwc2_hw_params *hw = &hsotg->hw_params;
1085 struct dwc2_core_params *p = &hsotg->params;
1086 bool dma_capable = !(hw->arch == GHWCFG2_SLAVE_ONLY_ARCH);
1087
1088 /* Buffer DMA */
1089 dwc2_set_param_bool(hsotg, &p->g_dma,
1090 false, "gadget-dma",
1091 dma_capable, false,
1092 dma_capable);
1093
1094 /* DMA Descriptor */
1095 dwc2_set_param_bool(hsotg, &p->g_dma_desc, false,
1096 "gadget-dma-desc",
1097 !!hw->dma_desc_enable, false,
1098 !!hw->dma_desc_enable);
1099}
1100
1101/**
1102 * dwc2_set_parameters() - Set all core parameters.
1103 *
1104 * @hsotg: Programming view of the DWC_otg controller
1105 * @params: The parameters to set
1106 */
1107static void dwc2_set_parameters(struct dwc2_hsotg *hsotg,
1108 const struct dwc2_core_params *params)
1109{
1110 struct dwc2_hw_params *hw = &hsotg->hw_params;
1111 struct dwc2_core_params *p = &hsotg->params;
1112 bool dma_capable = !(hw->arch == GHWCFG2_SLAVE_ONLY_ARCH);
1113
1114 dwc2_set_param_otg_cap(hsotg, params->otg_cap);
1115 if ((hsotg->dr_mode == USB_DR_MODE_HOST) ||
1116 (hsotg->dr_mode == USB_DR_MODE_OTG)) {
1117 dev_dbg(hsotg->dev, "Setting HOST parameters\n");
1118
1119 dwc2_set_param_bool(hsotg, &p->host_dma,
1120 false, "host-dma",
1121 dma_capable, false,
1122 dma_capable);
1123 dwc2_set_param_host_rx_fifo_size(hsotg,
1124 params->host_rx_fifo_size);
1125 dwc2_set_param_host_nperio_tx_fifo_size(hsotg,
1126 params->host_nperio_tx_fifo_size);
1127 dwc2_set_param_host_perio_tx_fifo_size(hsotg,
1128 params->host_perio_tx_fifo_size);
1129 }
1130 dwc2_set_param_dma_desc_enable(hsotg, params->dma_desc_enable);
1131 dwc2_set_param_dma_desc_fs_enable(hsotg, params->dma_desc_fs_enable);
1132
1133 dwc2_set_param_host_support_fs_ls_low_power(hsotg,
1134 params->host_support_fs_ls_low_power);
1135 dwc2_set_param_enable_dynamic_fifo(hsotg,
1136 params->enable_dynamic_fifo);
1137 dwc2_set_param_max_transfer_size(hsotg,
1138 params->max_transfer_size);
1139 dwc2_set_param_max_packet_count(hsotg,
1140 params->max_packet_count);
1141 dwc2_set_param_host_channels(hsotg, params->host_channels);
1142 dwc2_set_param_phy_type(hsotg, params->phy_type);
1143 dwc2_set_param_speed(hsotg, params->speed);
1144 dwc2_set_param_host_ls_low_power_phy_clk(hsotg,
1145 params->host_ls_low_power_phy_clk);
1146 dwc2_set_param_phy_ulpi_ddr(hsotg, params->phy_ulpi_ddr);
1147 dwc2_set_param_phy_ulpi_ext_vbus(hsotg,
1148 params->phy_ulpi_ext_vbus);
1149 dwc2_set_param_phy_utmi_width(hsotg, params->phy_utmi_width);
1150 dwc2_set_param_ulpi_fs_ls(hsotg, params->ulpi_fs_ls);
1151 dwc2_set_param_ts_dline(hsotg, params->ts_dline);
1152 dwc2_set_param_i2c_enable(hsotg, params->i2c_enable);
1153 dwc2_set_param_en_multiple_tx_fifo(hsotg,
1154 params->en_multiple_tx_fifo);
1155 dwc2_set_param_reload_ctl(hsotg, params->reload_ctl);
1156 dwc2_set_param_ahbcfg(hsotg, params->ahbcfg);
1157 dwc2_set_param_otg_ver(hsotg, params->otg_ver);
1158 dwc2_set_param_uframe_sched(hsotg, params->uframe_sched);
1159 dwc2_set_param_external_id_pin_ctl(hsotg, params->external_id_pin_ctl);
1160 dwc2_set_param_hibernation(hsotg, params->hibernation);
1161
1162 /*
1163 * Set devicetree-only parameters. These parameters do not
1164 * take any values from @params.
1165 */
1166 if ((hsotg->dr_mode == USB_DR_MODE_PERIPHERAL) ||
1167 (hsotg->dr_mode == USB_DR_MODE_OTG)) {
1168 dev_dbg(hsotg->dev, "Setting peripheral device properties\n");
1169
1170 dwc2_set_gadget_dma(hsotg);
1171
1172 /*
1173 * The values for g_rx_fifo_size (2048) and
1174 * g_np_tx_fifo_size (1024) come from the legacy s3c
1175 * gadget driver. These defaults have been hard-coded
1176 * for some time so many platforms depend on these
1177 * values. Leave them as defaults for now and only
1178 * auto-detect if the hardware does not support the
1179 * default.
1180 */
1181 dwc2_set_param_u32(hsotg, &p->g_rx_fifo_size,
1182 true, "g-rx-fifo-size", 2048,
1183 hw->rx_fifo_size,
1184 16, hw->rx_fifo_size);
1185
1186 dwc2_set_param_u32(hsotg, &p->g_np_tx_fifo_size,
1187 true, "g-np-tx-fifo-size", 1024,
1188 hw->dev_nperio_tx_fifo_size,
1189 16, hw->dev_nperio_tx_fifo_size);
1190
1191 dwc2_set_param_tx_fifo_sizes(hsotg);
1192 }
1193}
1194
1195/*
1196 * Gets host hardware parameters. Forces host mode if not currently in
1197 * host mode. Should be called immediately after a core soft reset in
1198 * order to get the reset values.
1199 */
1200static void dwc2_get_host_hwparams(struct dwc2_hsotg *hsotg)
1201{
1202 struct dwc2_hw_params *hw = &hsotg->hw_params;
1203 u32 gnptxfsiz;
1204 u32 hptxfsiz;
1205 bool forced;
1206
1207 if (hsotg->dr_mode == USB_DR_MODE_PERIPHERAL)
1208 return;
1209
1210 forced = dwc2_force_mode_if_needed(hsotg, true);
1211
1212 gnptxfsiz = dwc2_readl(hsotg->regs + GNPTXFSIZ);
1213 hptxfsiz = dwc2_readl(hsotg->regs + HPTXFSIZ);
1214 dev_dbg(hsotg->dev, "gnptxfsiz=%08x\n", gnptxfsiz);
1215 dev_dbg(hsotg->dev, "hptxfsiz=%08x\n", hptxfsiz);
1216
1217 if (forced)
1218 dwc2_clear_force_mode(hsotg);
1219
1220 hw->host_nperio_tx_fifo_size = (gnptxfsiz & FIFOSIZE_DEPTH_MASK) >>
1221 FIFOSIZE_DEPTH_SHIFT;
1222 hw->host_perio_tx_fifo_size = (hptxfsiz & FIFOSIZE_DEPTH_MASK) >>
1223 FIFOSIZE_DEPTH_SHIFT;
1224}
1225
1226/*
1227 * Gets device hardware parameters. Forces device mode if not
1228 * currently in device mode. Should be called immediately after a core
1229 * soft reset in order to get the reset values.
1230 */
1231static void dwc2_get_dev_hwparams(struct dwc2_hsotg *hsotg)
1232{
1233 struct dwc2_hw_params *hw = &hsotg->hw_params;
1234 bool forced;
1235 u32 gnptxfsiz;
1236
1237 if (hsotg->dr_mode == USB_DR_MODE_HOST)
1238 return;
1239
1240 forced = dwc2_force_mode_if_needed(hsotg, false);
1241
1242 gnptxfsiz = dwc2_readl(hsotg->regs + GNPTXFSIZ);
1243 dev_dbg(hsotg->dev, "gnptxfsiz=%08x\n", gnptxfsiz);
1244
1245 if (forced)
1246 dwc2_clear_force_mode(hsotg);
1247
1248 hw->dev_nperio_tx_fifo_size = (gnptxfsiz & FIFOSIZE_DEPTH_MASK) >>
1249 FIFOSIZE_DEPTH_SHIFT;
1250}
1251
1252/**
1253 * During device initialization, read various hardware configuration
1254 * registers and interpret the contents.
1255 */
1256int dwc2_get_hwparams(struct dwc2_hsotg *hsotg)
1257{
1258 struct dwc2_hw_params *hw = &hsotg->hw_params;
1259 unsigned int width;
1260 u32 hwcfg1, hwcfg2, hwcfg3, hwcfg4;
1261 u32 grxfsiz;
1262
1263 /*
1264 * Attempt to ensure this device is really a DWC_otg Controller.
1265 * Read and verify the GSNPSID register contents. The value should be
1266 * 0x45f42xxx or 0x45f43xxx, which corresponds to either "OT2" or "OT3",
1267 * as in "OTG version 2.xx" or "OTG version 3.xx".
1268 */
1269 hw->snpsid = dwc2_readl(hsotg->regs + GSNPSID);
1270 if ((hw->snpsid & 0xfffff000) != 0x4f542000 &&
1271 (hw->snpsid & 0xfffff000) != 0x4f543000 &&
1272 (hw->snpsid & 0xffff0000) != 0x55310000 &&
1273 (hw->snpsid & 0xffff0000) != 0x55320000) {
1274 dev_err(hsotg->dev, "Bad value for GSNPSID: 0x%08x\n",
1275 hw->snpsid);
1276 return -ENODEV;
1277 }
1278
1279 dev_dbg(hsotg->dev, "Core Release: %1x.%1x%1x%1x (snpsid=%x)\n",
1280 hw->snpsid >> 12 & 0xf, hw->snpsid >> 8 & 0xf,
1281 hw->snpsid >> 4 & 0xf, hw->snpsid & 0xf, hw->snpsid);
1282
1283 hwcfg1 = dwc2_readl(hsotg->regs + GHWCFG1);
1284 hwcfg2 = dwc2_readl(hsotg->regs + GHWCFG2);
1285 hwcfg3 = dwc2_readl(hsotg->regs + GHWCFG3);
1286 hwcfg4 = dwc2_readl(hsotg->regs + GHWCFG4);
1287 grxfsiz = dwc2_readl(hsotg->regs + GRXFSIZ);
1288
1289 dev_dbg(hsotg->dev, "hwcfg1=%08x\n", hwcfg1);
1290 dev_dbg(hsotg->dev, "hwcfg2=%08x\n", hwcfg2);
1291 dev_dbg(hsotg->dev, "hwcfg3=%08x\n", hwcfg3);
1292 dev_dbg(hsotg->dev, "hwcfg4=%08x\n", hwcfg4);
1293 dev_dbg(hsotg->dev, "grxfsiz=%08x\n", grxfsiz);
1294
1295 /*
1296 * Host specific hardware parameters. Reading these parameters
1297 * requires the controller to be in host mode. The mode will
1298 * be forced, if necessary, to read these values.
1299 */
1300 dwc2_get_host_hwparams(hsotg);
1301 dwc2_get_dev_hwparams(hsotg);
1302
1303 /* hwcfg1 */
1304 hw->dev_ep_dirs = hwcfg1;
1305
1306 /* hwcfg2 */
1307 hw->op_mode = (hwcfg2 & GHWCFG2_OP_MODE_MASK) >>
1308 GHWCFG2_OP_MODE_SHIFT;
1309 hw->arch = (hwcfg2 & GHWCFG2_ARCHITECTURE_MASK) >>
1310 GHWCFG2_ARCHITECTURE_SHIFT;
1311 hw->enable_dynamic_fifo = !!(hwcfg2 & GHWCFG2_DYNAMIC_FIFO);
1312 hw->host_channels = 1 + ((hwcfg2 & GHWCFG2_NUM_HOST_CHAN_MASK) >>
1313 GHWCFG2_NUM_HOST_CHAN_SHIFT);
1314 hw->hs_phy_type = (hwcfg2 & GHWCFG2_HS_PHY_TYPE_MASK) >>
1315 GHWCFG2_HS_PHY_TYPE_SHIFT;
1316 hw->fs_phy_type = (hwcfg2 & GHWCFG2_FS_PHY_TYPE_MASK) >>
1317 GHWCFG2_FS_PHY_TYPE_SHIFT;
1318 hw->num_dev_ep = (hwcfg2 & GHWCFG2_NUM_DEV_EP_MASK) >>
1319 GHWCFG2_NUM_DEV_EP_SHIFT;
1320 hw->nperio_tx_q_depth =
1321 (hwcfg2 & GHWCFG2_NONPERIO_TX_Q_DEPTH_MASK) >>
1322 GHWCFG2_NONPERIO_TX_Q_DEPTH_SHIFT << 1;
1323 hw->host_perio_tx_q_depth =
1324 (hwcfg2 & GHWCFG2_HOST_PERIO_TX_Q_DEPTH_MASK) >>
1325 GHWCFG2_HOST_PERIO_TX_Q_DEPTH_SHIFT << 1;
1326 hw->dev_token_q_depth =
1327 (hwcfg2 & GHWCFG2_DEV_TOKEN_Q_DEPTH_MASK) >>
1328 GHWCFG2_DEV_TOKEN_Q_DEPTH_SHIFT;
1329
1330 /* hwcfg3 */
1331 width = (hwcfg3 & GHWCFG3_XFER_SIZE_CNTR_WIDTH_MASK) >>
1332 GHWCFG3_XFER_SIZE_CNTR_WIDTH_SHIFT;
1333 hw->max_transfer_size = (1 << (width + 11)) - 1;
1334 width = (hwcfg3 & GHWCFG3_PACKET_SIZE_CNTR_WIDTH_MASK) >>
1335 GHWCFG3_PACKET_SIZE_CNTR_WIDTH_SHIFT;
1336 hw->max_packet_count = (1 << (width + 4)) - 1;
1337 hw->i2c_enable = !!(hwcfg3 & GHWCFG3_I2C);
1338 hw->total_fifo_size = (hwcfg3 & GHWCFG3_DFIFO_DEPTH_MASK) >>
1339 GHWCFG3_DFIFO_DEPTH_SHIFT;
1340
1341 /* hwcfg4 */
1342 hw->en_multiple_tx_fifo = !!(hwcfg4 & GHWCFG4_DED_FIFO_EN);
1343 hw->num_dev_perio_in_ep = (hwcfg4 & GHWCFG4_NUM_DEV_PERIO_IN_EP_MASK) >>
1344 GHWCFG4_NUM_DEV_PERIO_IN_EP_SHIFT;
1345 hw->dma_desc_enable = !!(hwcfg4 & GHWCFG4_DESC_DMA);
1346 hw->power_optimized = !!(hwcfg4 & GHWCFG4_POWER_OPTIMIZ);
1347 hw->utmi_phy_data_width = (hwcfg4 & GHWCFG4_UTMI_PHY_DATA_WIDTH_MASK) >>
1348 GHWCFG4_UTMI_PHY_DATA_WIDTH_SHIFT;
1349
1350 /* fifo sizes */
1351 hw->rx_fifo_size = (grxfsiz & GRXFSIZ_DEPTH_MASK) >>
1352 GRXFSIZ_DEPTH_SHIFT;
1353
1354 dev_dbg(hsotg->dev, "Detected values from hardware:\n");
1355 dev_dbg(hsotg->dev, " op_mode=%d\n",
1356 hw->op_mode);
1357 dev_dbg(hsotg->dev, " arch=%d\n",
1358 hw->arch);
1359 dev_dbg(hsotg->dev, " dma_desc_enable=%d\n",
1360 hw->dma_desc_enable);
1361 dev_dbg(hsotg->dev, " power_optimized=%d\n",
1362 hw->power_optimized);
1363 dev_dbg(hsotg->dev, " i2c_enable=%d\n",
1364 hw->i2c_enable);
1365 dev_dbg(hsotg->dev, " hs_phy_type=%d\n",
1366 hw->hs_phy_type);
1367 dev_dbg(hsotg->dev, " fs_phy_type=%d\n",
1368 hw->fs_phy_type);
1369 dev_dbg(hsotg->dev, " utmi_phy_data_width=%d\n",
1370 hw->utmi_phy_data_width);
1371 dev_dbg(hsotg->dev, " num_dev_ep=%d\n",
1372 hw->num_dev_ep);
1373 dev_dbg(hsotg->dev, " num_dev_perio_in_ep=%d\n",
1374 hw->num_dev_perio_in_ep);
1375 dev_dbg(hsotg->dev, " host_channels=%d\n",
1376 hw->host_channels);
1377 dev_dbg(hsotg->dev, " max_transfer_size=%d\n",
1378 hw->max_transfer_size);
1379 dev_dbg(hsotg->dev, " max_packet_count=%d\n",
1380 hw->max_packet_count);
1381 dev_dbg(hsotg->dev, " nperio_tx_q_depth=0x%0x\n",
1382 hw->nperio_tx_q_depth);
1383 dev_dbg(hsotg->dev, " host_perio_tx_q_depth=0x%0x\n",
1384 hw->host_perio_tx_q_depth);
1385 dev_dbg(hsotg->dev, " dev_token_q_depth=0x%0x\n",
1386 hw->dev_token_q_depth);
1387 dev_dbg(hsotg->dev, " enable_dynamic_fifo=%d\n",
1388 hw->enable_dynamic_fifo);
1389 dev_dbg(hsotg->dev, " en_multiple_tx_fifo=%d\n",
1390 hw->en_multiple_tx_fifo);
1391 dev_dbg(hsotg->dev, " total_fifo_size=%d\n",
1392 hw->total_fifo_size);
1393 dev_dbg(hsotg->dev, " rx_fifo_size=%d\n",
1394 hw->rx_fifo_size);
1395 dev_dbg(hsotg->dev, " host_nperio_tx_fifo_size=%d\n",
1396 hw->host_nperio_tx_fifo_size);
1397 dev_dbg(hsotg->dev, " host_perio_tx_fifo_size=%d\n",
1398 hw->host_perio_tx_fifo_size);
1399 dev_dbg(hsotg->dev, "\n");
1400
1401 return 0;
1402}
1403
1404int dwc2_init_params(struct dwc2_hsotg *hsotg)
1405{
1406 const struct of_device_id *match;
1407 struct dwc2_core_params params;
1408
1409 match = of_match_device(dwc2_of_match_table, hsotg->dev);
1410 if (match && match->data)
1411 params = *((struct dwc2_core_params *)match->data);
1412 else
1413 params = params_default;
1414
1415 if (dwc2_is_fs_iot(hsotg)) {
1416 params.speed = DWC2_SPEED_PARAM_FULL;
1417 params.phy_type = DWC2_PHY_TYPE_PARAM_FS;
1418 }
1419
1420 dwc2_set_parameters(hsotg, ¶ms);
1421
1422 return 0;
1423}
1// SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause)
2/*
3 * Copyright (C) 2004-2016 Synopsys, Inc.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions, and the following disclaimer,
10 * without modification.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 * 3. The names of the above-listed copyright holders may not be used
15 * to endorse or promote products derived from this software without
16 * specific prior written permission.
17 *
18 * ALTERNATIVELY, this software may be distributed under the terms of the
19 * GNU General Public License ("GPL") as published by the Free Software
20 * Foundation; either version 2 of the License, or (at your option) any
21 * later version.
22 *
23 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
24 * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
25 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
26 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
27 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
28 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
29 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
30 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
31 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
32 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
33 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
34 */
35
36#include <linux/kernel.h>
37#include <linux/module.h>
38#include <linux/of_device.h>
39
40#include "core.h"
41
42static void dwc2_set_bcm_params(struct dwc2_hsotg *hsotg)
43{
44 struct dwc2_core_params *p = &hsotg->params;
45
46 p->host_rx_fifo_size = 774;
47 p->max_transfer_size = 65535;
48 p->max_packet_count = 511;
49 p->ahbcfg = 0x10;
50}
51
52static void dwc2_set_his_params(struct dwc2_hsotg *hsotg)
53{
54 struct dwc2_core_params *p = &hsotg->params;
55
56 p->otg_cap = DWC2_CAP_PARAM_NO_HNP_SRP_CAPABLE;
57 p->speed = DWC2_SPEED_PARAM_HIGH;
58 p->host_rx_fifo_size = 512;
59 p->host_nperio_tx_fifo_size = 512;
60 p->host_perio_tx_fifo_size = 512;
61 p->max_transfer_size = 65535;
62 p->max_packet_count = 511;
63 p->host_channels = 16;
64 p->phy_type = DWC2_PHY_TYPE_PARAM_UTMI;
65 p->phy_utmi_width = 8;
66 p->i2c_enable = false;
67 p->reload_ctl = false;
68 p->ahbcfg = GAHBCFG_HBSTLEN_INCR16 <<
69 GAHBCFG_HBSTLEN_SHIFT;
70 p->change_speed_quirk = true;
71 p->power_down = false;
72}
73
74static void dwc2_set_s3c6400_params(struct dwc2_hsotg *hsotg)
75{
76 struct dwc2_core_params *p = &hsotg->params;
77
78 p->power_down = 0;
79 p->phy_utmi_width = 8;
80}
81
82static void dwc2_set_rk_params(struct dwc2_hsotg *hsotg)
83{
84 struct dwc2_core_params *p = &hsotg->params;
85
86 p->otg_cap = DWC2_CAP_PARAM_NO_HNP_SRP_CAPABLE;
87 p->host_rx_fifo_size = 525;
88 p->host_nperio_tx_fifo_size = 128;
89 p->host_perio_tx_fifo_size = 256;
90 p->ahbcfg = GAHBCFG_HBSTLEN_INCR16 <<
91 GAHBCFG_HBSTLEN_SHIFT;
92 p->power_down = 0;
93}
94
95static void dwc2_set_ltq_params(struct dwc2_hsotg *hsotg)
96{
97 struct dwc2_core_params *p = &hsotg->params;
98
99 p->otg_cap = 2;
100 p->host_rx_fifo_size = 288;
101 p->host_nperio_tx_fifo_size = 128;
102 p->host_perio_tx_fifo_size = 96;
103 p->max_transfer_size = 65535;
104 p->max_packet_count = 511;
105 p->ahbcfg = GAHBCFG_HBSTLEN_INCR16 <<
106 GAHBCFG_HBSTLEN_SHIFT;
107}
108
109static void dwc2_set_amlogic_params(struct dwc2_hsotg *hsotg)
110{
111 struct dwc2_core_params *p = &hsotg->params;
112
113 p->otg_cap = DWC2_CAP_PARAM_NO_HNP_SRP_CAPABLE;
114 p->speed = DWC2_SPEED_PARAM_HIGH;
115 p->host_rx_fifo_size = 512;
116 p->host_nperio_tx_fifo_size = 500;
117 p->host_perio_tx_fifo_size = 500;
118 p->host_channels = 16;
119 p->phy_type = DWC2_PHY_TYPE_PARAM_UTMI;
120 p->ahbcfg = GAHBCFG_HBSTLEN_INCR8 <<
121 GAHBCFG_HBSTLEN_SHIFT;
122 p->power_down = DWC2_POWER_DOWN_PARAM_NONE;
123}
124
125static void dwc2_set_amlogic_g12a_params(struct dwc2_hsotg *hsotg)
126{
127 struct dwc2_core_params *p = &hsotg->params;
128
129 p->lpm = false;
130 p->lpm_clock_gating = false;
131 p->besl = false;
132 p->hird_threshold_en = false;
133}
134
135static void dwc2_set_amcc_params(struct dwc2_hsotg *hsotg)
136{
137 struct dwc2_core_params *p = &hsotg->params;
138
139 p->ahbcfg = GAHBCFG_HBSTLEN_INCR16 << GAHBCFG_HBSTLEN_SHIFT;
140}
141
142static void dwc2_set_stm32f4x9_fsotg_params(struct dwc2_hsotg *hsotg)
143{
144 struct dwc2_core_params *p = &hsotg->params;
145
146 p->otg_cap = DWC2_CAP_PARAM_NO_HNP_SRP_CAPABLE;
147 p->speed = DWC2_SPEED_PARAM_FULL;
148 p->host_rx_fifo_size = 128;
149 p->host_nperio_tx_fifo_size = 96;
150 p->host_perio_tx_fifo_size = 96;
151 p->max_packet_count = 256;
152 p->phy_type = DWC2_PHY_TYPE_PARAM_FS;
153 p->i2c_enable = false;
154 p->activate_stm_fs_transceiver = true;
155}
156
157static void dwc2_set_stm32f7_hsotg_params(struct dwc2_hsotg *hsotg)
158{
159 struct dwc2_core_params *p = &hsotg->params;
160
161 p->host_rx_fifo_size = 622;
162 p->host_nperio_tx_fifo_size = 128;
163 p->host_perio_tx_fifo_size = 256;
164}
165
166const struct of_device_id dwc2_of_match_table[] = {
167 { .compatible = "brcm,bcm2835-usb", .data = dwc2_set_bcm_params },
168 { .compatible = "hisilicon,hi6220-usb", .data = dwc2_set_his_params },
169 { .compatible = "rockchip,rk3066-usb", .data = dwc2_set_rk_params },
170 { .compatible = "lantiq,arx100-usb", .data = dwc2_set_ltq_params },
171 { .compatible = "lantiq,xrx200-usb", .data = dwc2_set_ltq_params },
172 { .compatible = "snps,dwc2" },
173 { .compatible = "samsung,s3c6400-hsotg",
174 .data = dwc2_set_s3c6400_params },
175 { .compatible = "amlogic,meson8-usb",
176 .data = dwc2_set_amlogic_params },
177 { .compatible = "amlogic,meson8b-usb",
178 .data = dwc2_set_amlogic_params },
179 { .compatible = "amlogic,meson-gxbb-usb",
180 .data = dwc2_set_amlogic_params },
181 { .compatible = "amlogic,meson-g12a-usb",
182 .data = dwc2_set_amlogic_g12a_params },
183 { .compatible = "amcc,dwc-otg", .data = dwc2_set_amcc_params },
184 { .compatible = "st,stm32f4x9-fsotg",
185 .data = dwc2_set_stm32f4x9_fsotg_params },
186 { .compatible = "st,stm32f4x9-hsotg" },
187 { .compatible = "st,stm32f7-hsotg",
188 .data = dwc2_set_stm32f7_hsotg_params },
189 {},
190};
191MODULE_DEVICE_TABLE(of, dwc2_of_match_table);
192
193static void dwc2_set_param_otg_cap(struct dwc2_hsotg *hsotg)
194{
195 u8 val;
196
197 switch (hsotg->hw_params.op_mode) {
198 case GHWCFG2_OP_MODE_HNP_SRP_CAPABLE:
199 val = DWC2_CAP_PARAM_HNP_SRP_CAPABLE;
200 break;
201 case GHWCFG2_OP_MODE_SRP_ONLY_CAPABLE:
202 case GHWCFG2_OP_MODE_SRP_CAPABLE_DEVICE:
203 case GHWCFG2_OP_MODE_SRP_CAPABLE_HOST:
204 val = DWC2_CAP_PARAM_SRP_ONLY_CAPABLE;
205 break;
206 default:
207 val = DWC2_CAP_PARAM_NO_HNP_SRP_CAPABLE;
208 break;
209 }
210
211 hsotg->params.otg_cap = val;
212}
213
214static void dwc2_set_param_phy_type(struct dwc2_hsotg *hsotg)
215{
216 int val;
217 u32 hs_phy_type = hsotg->hw_params.hs_phy_type;
218
219 val = DWC2_PHY_TYPE_PARAM_FS;
220 if (hs_phy_type != GHWCFG2_HS_PHY_TYPE_NOT_SUPPORTED) {
221 if (hs_phy_type == GHWCFG2_HS_PHY_TYPE_UTMI ||
222 hs_phy_type == GHWCFG2_HS_PHY_TYPE_UTMI_ULPI)
223 val = DWC2_PHY_TYPE_PARAM_UTMI;
224 else
225 val = DWC2_PHY_TYPE_PARAM_ULPI;
226 }
227
228 if (dwc2_is_fs_iot(hsotg))
229 hsotg->params.phy_type = DWC2_PHY_TYPE_PARAM_FS;
230
231 hsotg->params.phy_type = val;
232}
233
234static void dwc2_set_param_speed(struct dwc2_hsotg *hsotg)
235{
236 int val;
237
238 val = hsotg->params.phy_type == DWC2_PHY_TYPE_PARAM_FS ?
239 DWC2_SPEED_PARAM_FULL : DWC2_SPEED_PARAM_HIGH;
240
241 if (dwc2_is_fs_iot(hsotg))
242 val = DWC2_SPEED_PARAM_FULL;
243
244 if (dwc2_is_hs_iot(hsotg))
245 val = DWC2_SPEED_PARAM_HIGH;
246
247 hsotg->params.speed = val;
248}
249
250static void dwc2_set_param_phy_utmi_width(struct dwc2_hsotg *hsotg)
251{
252 int val;
253
254 val = (hsotg->hw_params.utmi_phy_data_width ==
255 GHWCFG4_UTMI_PHY_DATA_WIDTH_8) ? 8 : 16;
256
257 if (hsotg->phy) {
258 /*
259 * If using the generic PHY framework, check if the PHY bus
260 * width is 8-bit and set the phyif appropriately.
261 */
262 if (phy_get_bus_width(hsotg->phy) == 8)
263 val = 8;
264 }
265
266 hsotg->params.phy_utmi_width = val;
267}
268
269static void dwc2_set_param_tx_fifo_sizes(struct dwc2_hsotg *hsotg)
270{
271 struct dwc2_core_params *p = &hsotg->params;
272 int depth_average;
273 int fifo_count;
274 int i;
275
276 fifo_count = dwc2_hsotg_tx_fifo_count(hsotg);
277
278 memset(p->g_tx_fifo_size, 0, sizeof(p->g_tx_fifo_size));
279 depth_average = dwc2_hsotg_tx_fifo_average_depth(hsotg);
280 for (i = 1; i <= fifo_count; i++)
281 p->g_tx_fifo_size[i] = depth_average;
282}
283
284static void dwc2_set_param_power_down(struct dwc2_hsotg *hsotg)
285{
286 int val;
287
288 if (hsotg->hw_params.hibernation)
289 val = 2;
290 else if (hsotg->hw_params.power_optimized)
291 val = 1;
292 else
293 val = 0;
294
295 hsotg->params.power_down = val;
296}
297
298static void dwc2_set_param_lpm(struct dwc2_hsotg *hsotg)
299{
300 struct dwc2_core_params *p = &hsotg->params;
301
302 p->lpm = hsotg->hw_params.lpm_mode;
303 if (p->lpm) {
304 p->lpm_clock_gating = true;
305 p->besl = true;
306 p->hird_threshold_en = true;
307 p->hird_threshold = 4;
308 } else {
309 p->lpm_clock_gating = false;
310 p->besl = false;
311 p->hird_threshold_en = false;
312 }
313}
314
315/**
316 * dwc2_set_default_params() - Set all core parameters to their
317 * auto-detected default values.
318 *
319 * @hsotg: Programming view of the DWC_otg controller
320 *
321 */
322static void dwc2_set_default_params(struct dwc2_hsotg *hsotg)
323{
324 struct dwc2_hw_params *hw = &hsotg->hw_params;
325 struct dwc2_core_params *p = &hsotg->params;
326 bool dma_capable = !(hw->arch == GHWCFG2_SLAVE_ONLY_ARCH);
327
328 dwc2_set_param_otg_cap(hsotg);
329 dwc2_set_param_phy_type(hsotg);
330 dwc2_set_param_speed(hsotg);
331 dwc2_set_param_phy_utmi_width(hsotg);
332 dwc2_set_param_power_down(hsotg);
333 dwc2_set_param_lpm(hsotg);
334 p->phy_ulpi_ddr = false;
335 p->phy_ulpi_ext_vbus = false;
336
337 p->enable_dynamic_fifo = hw->enable_dynamic_fifo;
338 p->en_multiple_tx_fifo = hw->en_multiple_tx_fifo;
339 p->i2c_enable = hw->i2c_enable;
340 p->acg_enable = hw->acg_enable;
341 p->ulpi_fs_ls = false;
342 p->ts_dline = false;
343 p->reload_ctl = (hw->snpsid >= DWC2_CORE_REV_2_92a);
344 p->uframe_sched = true;
345 p->external_id_pin_ctl = false;
346 p->ipg_isoc_en = false;
347 p->service_interval = false;
348 p->max_packet_count = hw->max_packet_count;
349 p->max_transfer_size = hw->max_transfer_size;
350 p->ahbcfg = GAHBCFG_HBSTLEN_INCR << GAHBCFG_HBSTLEN_SHIFT;
351 p->ref_clk_per = 33333;
352 p->sof_cnt_wkup_alert = 100;
353
354 if ((hsotg->dr_mode == USB_DR_MODE_HOST) ||
355 (hsotg->dr_mode == USB_DR_MODE_OTG)) {
356 p->host_dma = dma_capable;
357 p->dma_desc_enable = false;
358 p->dma_desc_fs_enable = false;
359 p->host_support_fs_ls_low_power = false;
360 p->host_ls_low_power_phy_clk = false;
361 p->host_channels = hw->host_channels;
362 p->host_rx_fifo_size = hw->rx_fifo_size;
363 p->host_nperio_tx_fifo_size = hw->host_nperio_tx_fifo_size;
364 p->host_perio_tx_fifo_size = hw->host_perio_tx_fifo_size;
365 }
366
367 if ((hsotg->dr_mode == USB_DR_MODE_PERIPHERAL) ||
368 (hsotg->dr_mode == USB_DR_MODE_OTG)) {
369 p->g_dma = dma_capable;
370 p->g_dma_desc = hw->dma_desc_enable;
371
372 /*
373 * The values for g_rx_fifo_size (2048) and
374 * g_np_tx_fifo_size (1024) come from the legacy s3c
375 * gadget driver. These defaults have been hard-coded
376 * for some time so many platforms depend on these
377 * values. Leave them as defaults for now and only
378 * auto-detect if the hardware does not support the
379 * default.
380 */
381 p->g_rx_fifo_size = 2048;
382 p->g_np_tx_fifo_size = 1024;
383 dwc2_set_param_tx_fifo_sizes(hsotg);
384 }
385}
386
387/**
388 * dwc2_get_device_properties() - Read in device properties.
389 *
390 * @hsotg: Programming view of the DWC_otg controller
391 *
392 * Read in the device properties and adjust core parameters if needed.
393 */
394static void dwc2_get_device_properties(struct dwc2_hsotg *hsotg)
395{
396 struct dwc2_core_params *p = &hsotg->params;
397 int num;
398
399 if ((hsotg->dr_mode == USB_DR_MODE_PERIPHERAL) ||
400 (hsotg->dr_mode == USB_DR_MODE_OTG)) {
401 device_property_read_u32(hsotg->dev, "g-rx-fifo-size",
402 &p->g_rx_fifo_size);
403
404 device_property_read_u32(hsotg->dev, "g-np-tx-fifo-size",
405 &p->g_np_tx_fifo_size);
406
407 num = device_property_count_u32(hsotg->dev, "g-tx-fifo-size");
408 if (num > 0) {
409 num = min(num, 15);
410 memset(p->g_tx_fifo_size, 0,
411 sizeof(p->g_tx_fifo_size));
412 device_property_read_u32_array(hsotg->dev,
413 "g-tx-fifo-size",
414 &p->g_tx_fifo_size[1],
415 num);
416 }
417 }
418
419 if (of_find_property(hsotg->dev->of_node, "disable-over-current", NULL))
420 p->oc_disable = true;
421}
422
423static void dwc2_check_param_otg_cap(struct dwc2_hsotg *hsotg)
424{
425 int valid = 1;
426
427 switch (hsotg->params.otg_cap) {
428 case DWC2_CAP_PARAM_HNP_SRP_CAPABLE:
429 if (hsotg->hw_params.op_mode != GHWCFG2_OP_MODE_HNP_SRP_CAPABLE)
430 valid = 0;
431 break;
432 case DWC2_CAP_PARAM_SRP_ONLY_CAPABLE:
433 switch (hsotg->hw_params.op_mode) {
434 case GHWCFG2_OP_MODE_HNP_SRP_CAPABLE:
435 case GHWCFG2_OP_MODE_SRP_ONLY_CAPABLE:
436 case GHWCFG2_OP_MODE_SRP_CAPABLE_DEVICE:
437 case GHWCFG2_OP_MODE_SRP_CAPABLE_HOST:
438 break;
439 default:
440 valid = 0;
441 break;
442 }
443 break;
444 case DWC2_CAP_PARAM_NO_HNP_SRP_CAPABLE:
445 /* always valid */
446 break;
447 default:
448 valid = 0;
449 break;
450 }
451
452 if (!valid)
453 dwc2_set_param_otg_cap(hsotg);
454}
455
456static void dwc2_check_param_phy_type(struct dwc2_hsotg *hsotg)
457{
458 int valid = 0;
459 u32 hs_phy_type;
460 u32 fs_phy_type;
461
462 hs_phy_type = hsotg->hw_params.hs_phy_type;
463 fs_phy_type = hsotg->hw_params.fs_phy_type;
464
465 switch (hsotg->params.phy_type) {
466 case DWC2_PHY_TYPE_PARAM_FS:
467 if (fs_phy_type == GHWCFG2_FS_PHY_TYPE_DEDICATED)
468 valid = 1;
469 break;
470 case DWC2_PHY_TYPE_PARAM_UTMI:
471 if ((hs_phy_type == GHWCFG2_HS_PHY_TYPE_UTMI) ||
472 (hs_phy_type == GHWCFG2_HS_PHY_TYPE_UTMI_ULPI))
473 valid = 1;
474 break;
475 case DWC2_PHY_TYPE_PARAM_ULPI:
476 if ((hs_phy_type == GHWCFG2_HS_PHY_TYPE_UTMI) ||
477 (hs_phy_type == GHWCFG2_HS_PHY_TYPE_UTMI_ULPI))
478 valid = 1;
479 break;
480 default:
481 break;
482 }
483
484 if (!valid)
485 dwc2_set_param_phy_type(hsotg);
486}
487
488static void dwc2_check_param_speed(struct dwc2_hsotg *hsotg)
489{
490 int valid = 1;
491 int phy_type = hsotg->params.phy_type;
492 int speed = hsotg->params.speed;
493
494 switch (speed) {
495 case DWC2_SPEED_PARAM_HIGH:
496 if ((hsotg->params.speed == DWC2_SPEED_PARAM_HIGH) &&
497 (phy_type == DWC2_PHY_TYPE_PARAM_FS))
498 valid = 0;
499 break;
500 case DWC2_SPEED_PARAM_FULL:
501 case DWC2_SPEED_PARAM_LOW:
502 break;
503 default:
504 valid = 0;
505 break;
506 }
507
508 if (!valid)
509 dwc2_set_param_speed(hsotg);
510}
511
512static void dwc2_check_param_phy_utmi_width(struct dwc2_hsotg *hsotg)
513{
514 int valid = 0;
515 int param = hsotg->params.phy_utmi_width;
516 int width = hsotg->hw_params.utmi_phy_data_width;
517
518 switch (width) {
519 case GHWCFG4_UTMI_PHY_DATA_WIDTH_8:
520 valid = (param == 8);
521 break;
522 case GHWCFG4_UTMI_PHY_DATA_WIDTH_16:
523 valid = (param == 16);
524 break;
525 case GHWCFG4_UTMI_PHY_DATA_WIDTH_8_OR_16:
526 valid = (param == 8 || param == 16);
527 break;
528 }
529
530 if (!valid)
531 dwc2_set_param_phy_utmi_width(hsotg);
532}
533
534static void dwc2_check_param_power_down(struct dwc2_hsotg *hsotg)
535{
536 int param = hsotg->params.power_down;
537
538 switch (param) {
539 case DWC2_POWER_DOWN_PARAM_NONE:
540 break;
541 case DWC2_POWER_DOWN_PARAM_PARTIAL:
542 if (hsotg->hw_params.power_optimized)
543 break;
544 dev_dbg(hsotg->dev,
545 "Partial power down isn't supported by HW\n");
546 param = DWC2_POWER_DOWN_PARAM_NONE;
547 break;
548 case DWC2_POWER_DOWN_PARAM_HIBERNATION:
549 if (hsotg->hw_params.hibernation)
550 break;
551 dev_dbg(hsotg->dev,
552 "Hibernation isn't supported by HW\n");
553 param = DWC2_POWER_DOWN_PARAM_NONE;
554 break;
555 default:
556 dev_err(hsotg->dev,
557 "%s: Invalid parameter power_down=%d\n",
558 __func__, param);
559 param = DWC2_POWER_DOWN_PARAM_NONE;
560 break;
561 }
562
563 hsotg->params.power_down = param;
564}
565
566static void dwc2_check_param_tx_fifo_sizes(struct dwc2_hsotg *hsotg)
567{
568 int fifo_count;
569 int fifo;
570 int min;
571 u32 total = 0;
572 u32 dptxfszn;
573
574 fifo_count = dwc2_hsotg_tx_fifo_count(hsotg);
575 min = hsotg->hw_params.en_multiple_tx_fifo ? 16 : 4;
576
577 for (fifo = 1; fifo <= fifo_count; fifo++)
578 total += hsotg->params.g_tx_fifo_size[fifo];
579
580 if (total > dwc2_hsotg_tx_fifo_total_depth(hsotg) || !total) {
581 dev_warn(hsotg->dev, "%s: Invalid parameter g-tx-fifo-size, setting to default average\n",
582 __func__);
583 dwc2_set_param_tx_fifo_sizes(hsotg);
584 }
585
586 for (fifo = 1; fifo <= fifo_count; fifo++) {
587 dptxfszn = hsotg->hw_params.g_tx_fifo_size[fifo];
588
589 if (hsotg->params.g_tx_fifo_size[fifo] < min ||
590 hsotg->params.g_tx_fifo_size[fifo] > dptxfszn) {
591 dev_warn(hsotg->dev, "%s: Invalid parameter g_tx_fifo_size[%d]=%d\n",
592 __func__, fifo,
593 hsotg->params.g_tx_fifo_size[fifo]);
594 hsotg->params.g_tx_fifo_size[fifo] = dptxfszn;
595 }
596 }
597}
598
599#define CHECK_RANGE(_param, _min, _max, _def) do { \
600 if ((int)(hsotg->params._param) < (_min) || \
601 (hsotg->params._param) > (_max)) { \
602 dev_warn(hsotg->dev, "%s: Invalid parameter %s=%d\n", \
603 __func__, #_param, hsotg->params._param); \
604 hsotg->params._param = (_def); \
605 } \
606 } while (0)
607
608#define CHECK_BOOL(_param, _check) do { \
609 if (hsotg->params._param && !(_check)) { \
610 dev_warn(hsotg->dev, "%s: Invalid parameter %s=%d\n", \
611 __func__, #_param, hsotg->params._param); \
612 hsotg->params._param = false; \
613 } \
614 } while (0)
615
616static void dwc2_check_params(struct dwc2_hsotg *hsotg)
617{
618 struct dwc2_hw_params *hw = &hsotg->hw_params;
619 struct dwc2_core_params *p = &hsotg->params;
620 bool dma_capable = !(hw->arch == GHWCFG2_SLAVE_ONLY_ARCH);
621
622 dwc2_check_param_otg_cap(hsotg);
623 dwc2_check_param_phy_type(hsotg);
624 dwc2_check_param_speed(hsotg);
625 dwc2_check_param_phy_utmi_width(hsotg);
626 dwc2_check_param_power_down(hsotg);
627 CHECK_BOOL(enable_dynamic_fifo, hw->enable_dynamic_fifo);
628 CHECK_BOOL(en_multiple_tx_fifo, hw->en_multiple_tx_fifo);
629 CHECK_BOOL(i2c_enable, hw->i2c_enable);
630 CHECK_BOOL(ipg_isoc_en, hw->ipg_isoc_en);
631 CHECK_BOOL(acg_enable, hw->acg_enable);
632 CHECK_BOOL(reload_ctl, (hsotg->hw_params.snpsid > DWC2_CORE_REV_2_92a));
633 CHECK_BOOL(lpm, (hsotg->hw_params.snpsid >= DWC2_CORE_REV_2_80a));
634 CHECK_BOOL(lpm, hw->lpm_mode);
635 CHECK_BOOL(lpm_clock_gating, hsotg->params.lpm);
636 CHECK_BOOL(besl, hsotg->params.lpm);
637 CHECK_BOOL(besl, (hsotg->hw_params.snpsid >= DWC2_CORE_REV_3_00a));
638 CHECK_BOOL(hird_threshold_en, hsotg->params.lpm);
639 CHECK_RANGE(hird_threshold, 0, hsotg->params.besl ? 12 : 7, 0);
640 CHECK_BOOL(service_interval, hw->service_interval_mode);
641 CHECK_RANGE(max_packet_count,
642 15, hw->max_packet_count,
643 hw->max_packet_count);
644 CHECK_RANGE(max_transfer_size,
645 2047, hw->max_transfer_size,
646 hw->max_transfer_size);
647
648 if ((hsotg->dr_mode == USB_DR_MODE_HOST) ||
649 (hsotg->dr_mode == USB_DR_MODE_OTG)) {
650 CHECK_BOOL(host_dma, dma_capable);
651 CHECK_BOOL(dma_desc_enable, p->host_dma);
652 CHECK_BOOL(dma_desc_fs_enable, p->dma_desc_enable);
653 CHECK_BOOL(host_ls_low_power_phy_clk,
654 p->phy_type == DWC2_PHY_TYPE_PARAM_FS);
655 CHECK_RANGE(host_channels,
656 1, hw->host_channels,
657 hw->host_channels);
658 CHECK_RANGE(host_rx_fifo_size,
659 16, hw->rx_fifo_size,
660 hw->rx_fifo_size);
661 CHECK_RANGE(host_nperio_tx_fifo_size,
662 16, hw->host_nperio_tx_fifo_size,
663 hw->host_nperio_tx_fifo_size);
664 CHECK_RANGE(host_perio_tx_fifo_size,
665 16, hw->host_perio_tx_fifo_size,
666 hw->host_perio_tx_fifo_size);
667 }
668
669 if ((hsotg->dr_mode == USB_DR_MODE_PERIPHERAL) ||
670 (hsotg->dr_mode == USB_DR_MODE_OTG)) {
671 CHECK_BOOL(g_dma, dma_capable);
672 CHECK_BOOL(g_dma_desc, (p->g_dma && hw->dma_desc_enable));
673 CHECK_RANGE(g_rx_fifo_size,
674 16, hw->rx_fifo_size,
675 hw->rx_fifo_size);
676 CHECK_RANGE(g_np_tx_fifo_size,
677 16, hw->dev_nperio_tx_fifo_size,
678 hw->dev_nperio_tx_fifo_size);
679 dwc2_check_param_tx_fifo_sizes(hsotg);
680 }
681}
682
683/*
684 * Gets host hardware parameters. Forces host mode if not currently in
685 * host mode. Should be called immediately after a core soft reset in
686 * order to get the reset values.
687 */
688static void dwc2_get_host_hwparams(struct dwc2_hsotg *hsotg)
689{
690 struct dwc2_hw_params *hw = &hsotg->hw_params;
691 u32 gnptxfsiz;
692 u32 hptxfsiz;
693
694 if (hsotg->dr_mode == USB_DR_MODE_PERIPHERAL)
695 return;
696
697 dwc2_force_mode(hsotg, true);
698
699 gnptxfsiz = dwc2_readl(hsotg, GNPTXFSIZ);
700 hptxfsiz = dwc2_readl(hsotg, HPTXFSIZ);
701
702 hw->host_nperio_tx_fifo_size = (gnptxfsiz & FIFOSIZE_DEPTH_MASK) >>
703 FIFOSIZE_DEPTH_SHIFT;
704 hw->host_perio_tx_fifo_size = (hptxfsiz & FIFOSIZE_DEPTH_MASK) >>
705 FIFOSIZE_DEPTH_SHIFT;
706}
707
708/*
709 * Gets device hardware parameters. Forces device mode if not
710 * currently in device mode. Should be called immediately after a core
711 * soft reset in order to get the reset values.
712 */
713static void dwc2_get_dev_hwparams(struct dwc2_hsotg *hsotg)
714{
715 struct dwc2_hw_params *hw = &hsotg->hw_params;
716 u32 gnptxfsiz;
717 int fifo, fifo_count;
718
719 if (hsotg->dr_mode == USB_DR_MODE_HOST)
720 return;
721
722 dwc2_force_mode(hsotg, false);
723
724 gnptxfsiz = dwc2_readl(hsotg, GNPTXFSIZ);
725
726 fifo_count = dwc2_hsotg_tx_fifo_count(hsotg);
727
728 for (fifo = 1; fifo <= fifo_count; fifo++) {
729 hw->g_tx_fifo_size[fifo] =
730 (dwc2_readl(hsotg, DPTXFSIZN(fifo)) &
731 FIFOSIZE_DEPTH_MASK) >> FIFOSIZE_DEPTH_SHIFT;
732 }
733
734 hw->dev_nperio_tx_fifo_size = (gnptxfsiz & FIFOSIZE_DEPTH_MASK) >>
735 FIFOSIZE_DEPTH_SHIFT;
736}
737
738/**
739 * During device initialization, read various hardware configuration
740 * registers and interpret the contents.
741 *
742 * @hsotg: Programming view of the DWC_otg controller
743 *
744 */
745int dwc2_get_hwparams(struct dwc2_hsotg *hsotg)
746{
747 struct dwc2_hw_params *hw = &hsotg->hw_params;
748 unsigned int width;
749 u32 hwcfg1, hwcfg2, hwcfg3, hwcfg4;
750 u32 grxfsiz;
751
752 /*
753 * Attempt to ensure this device is really a DWC_otg Controller.
754 * Read and verify the GSNPSID register contents. The value should be
755 * 0x45f4xxxx, 0x5531xxxx or 0x5532xxxx
756 */
757
758 hw->snpsid = dwc2_readl(hsotg, GSNPSID);
759 if ((hw->snpsid & GSNPSID_ID_MASK) != DWC2_OTG_ID &&
760 (hw->snpsid & GSNPSID_ID_MASK) != DWC2_FS_IOT_ID &&
761 (hw->snpsid & GSNPSID_ID_MASK) != DWC2_HS_IOT_ID) {
762 dev_err(hsotg->dev, "Bad value for GSNPSID: 0x%08x\n",
763 hw->snpsid);
764 return -ENODEV;
765 }
766
767 dev_dbg(hsotg->dev, "Core Release: %1x.%1x%1x%1x (snpsid=%x)\n",
768 hw->snpsid >> 12 & 0xf, hw->snpsid >> 8 & 0xf,
769 hw->snpsid >> 4 & 0xf, hw->snpsid & 0xf, hw->snpsid);
770
771 hwcfg1 = dwc2_readl(hsotg, GHWCFG1);
772 hwcfg2 = dwc2_readl(hsotg, GHWCFG2);
773 hwcfg3 = dwc2_readl(hsotg, GHWCFG3);
774 hwcfg4 = dwc2_readl(hsotg, GHWCFG4);
775 grxfsiz = dwc2_readl(hsotg, GRXFSIZ);
776
777 /* hwcfg1 */
778 hw->dev_ep_dirs = hwcfg1;
779
780 /* hwcfg2 */
781 hw->op_mode = (hwcfg2 & GHWCFG2_OP_MODE_MASK) >>
782 GHWCFG2_OP_MODE_SHIFT;
783 hw->arch = (hwcfg2 & GHWCFG2_ARCHITECTURE_MASK) >>
784 GHWCFG2_ARCHITECTURE_SHIFT;
785 hw->enable_dynamic_fifo = !!(hwcfg2 & GHWCFG2_DYNAMIC_FIFO);
786 hw->host_channels = 1 + ((hwcfg2 & GHWCFG2_NUM_HOST_CHAN_MASK) >>
787 GHWCFG2_NUM_HOST_CHAN_SHIFT);
788 hw->hs_phy_type = (hwcfg2 & GHWCFG2_HS_PHY_TYPE_MASK) >>
789 GHWCFG2_HS_PHY_TYPE_SHIFT;
790 hw->fs_phy_type = (hwcfg2 & GHWCFG2_FS_PHY_TYPE_MASK) >>
791 GHWCFG2_FS_PHY_TYPE_SHIFT;
792 hw->num_dev_ep = (hwcfg2 & GHWCFG2_NUM_DEV_EP_MASK) >>
793 GHWCFG2_NUM_DEV_EP_SHIFT;
794 hw->nperio_tx_q_depth =
795 (hwcfg2 & GHWCFG2_NONPERIO_TX_Q_DEPTH_MASK) >>
796 GHWCFG2_NONPERIO_TX_Q_DEPTH_SHIFT << 1;
797 hw->host_perio_tx_q_depth =
798 (hwcfg2 & GHWCFG2_HOST_PERIO_TX_Q_DEPTH_MASK) >>
799 GHWCFG2_HOST_PERIO_TX_Q_DEPTH_SHIFT << 1;
800 hw->dev_token_q_depth =
801 (hwcfg2 & GHWCFG2_DEV_TOKEN_Q_DEPTH_MASK) >>
802 GHWCFG2_DEV_TOKEN_Q_DEPTH_SHIFT;
803
804 /* hwcfg3 */
805 width = (hwcfg3 & GHWCFG3_XFER_SIZE_CNTR_WIDTH_MASK) >>
806 GHWCFG3_XFER_SIZE_CNTR_WIDTH_SHIFT;
807 hw->max_transfer_size = (1 << (width + 11)) - 1;
808 width = (hwcfg3 & GHWCFG3_PACKET_SIZE_CNTR_WIDTH_MASK) >>
809 GHWCFG3_PACKET_SIZE_CNTR_WIDTH_SHIFT;
810 hw->max_packet_count = (1 << (width + 4)) - 1;
811 hw->i2c_enable = !!(hwcfg3 & GHWCFG3_I2C);
812 hw->total_fifo_size = (hwcfg3 & GHWCFG3_DFIFO_DEPTH_MASK) >>
813 GHWCFG3_DFIFO_DEPTH_SHIFT;
814 hw->lpm_mode = !!(hwcfg3 & GHWCFG3_OTG_LPM_EN);
815
816 /* hwcfg4 */
817 hw->en_multiple_tx_fifo = !!(hwcfg4 & GHWCFG4_DED_FIFO_EN);
818 hw->num_dev_perio_in_ep = (hwcfg4 & GHWCFG4_NUM_DEV_PERIO_IN_EP_MASK) >>
819 GHWCFG4_NUM_DEV_PERIO_IN_EP_SHIFT;
820 hw->num_dev_in_eps = (hwcfg4 & GHWCFG4_NUM_IN_EPS_MASK) >>
821 GHWCFG4_NUM_IN_EPS_SHIFT;
822 hw->dma_desc_enable = !!(hwcfg4 & GHWCFG4_DESC_DMA);
823 hw->power_optimized = !!(hwcfg4 & GHWCFG4_POWER_OPTIMIZ);
824 hw->hibernation = !!(hwcfg4 & GHWCFG4_HIBER);
825 hw->utmi_phy_data_width = (hwcfg4 & GHWCFG4_UTMI_PHY_DATA_WIDTH_MASK) >>
826 GHWCFG4_UTMI_PHY_DATA_WIDTH_SHIFT;
827 hw->acg_enable = !!(hwcfg4 & GHWCFG4_ACG_SUPPORTED);
828 hw->ipg_isoc_en = !!(hwcfg4 & GHWCFG4_IPG_ISOC_SUPPORTED);
829 hw->service_interval_mode = !!(hwcfg4 &
830 GHWCFG4_SERVICE_INTERVAL_SUPPORTED);
831
832 /* fifo sizes */
833 hw->rx_fifo_size = (grxfsiz & GRXFSIZ_DEPTH_MASK) >>
834 GRXFSIZ_DEPTH_SHIFT;
835 /*
836 * Host specific hardware parameters. Reading these parameters
837 * requires the controller to be in host mode. The mode will
838 * be forced, if necessary, to read these values.
839 */
840 dwc2_get_host_hwparams(hsotg);
841 dwc2_get_dev_hwparams(hsotg);
842
843 return 0;
844}
845
846int dwc2_init_params(struct dwc2_hsotg *hsotg)
847{
848 const struct of_device_id *match;
849 void (*set_params)(void *data);
850
851 dwc2_set_default_params(hsotg);
852 dwc2_get_device_properties(hsotg);
853
854 match = of_match_device(dwc2_of_match_table, hsotg->dev);
855 if (match && match->data) {
856 set_params = match->data;
857 set_params(hsotg);
858 }
859
860 dwc2_check_params(hsotg);
861
862 return 0;
863}