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1// SPDX-License-Identifier: GPL-2.0
2/*
3 * NVIDIA Tegra xHCI host controller driver
4 *
5 * Copyright (C) 2014 NVIDIA Corporation
6 * Copyright (C) 2014 Google, Inc.
7 */
8
9#include <linux/clk.h>
10#include <linux/delay.h>
11#include <linux/dma-mapping.h>
12#include <linux/firmware.h>
13#include <linux/interrupt.h>
14#include <linux/kernel.h>
15#include <linux/module.h>
16#include <linux/of_device.h>
17#include <linux/phy/phy.h>
18#include <linux/phy/tegra/xusb.h>
19#include <linux/platform_device.h>
20#include <linux/pm.h>
21#include <linux/regulator/consumer.h>
22#include <linux/reset.h>
23#include <linux/slab.h>
24
25#include "xhci.h"
26
27#define TEGRA_XHCI_SS_HIGH_SPEED 120000000
28#define TEGRA_XHCI_SS_LOW_SPEED 12000000
29
30/* FPCI CFG registers */
31#define XUSB_CFG_1 0x004
32#define XUSB_IO_SPACE_EN BIT(0)
33#define XUSB_MEM_SPACE_EN BIT(1)
34#define XUSB_BUS_MASTER_EN BIT(2)
35#define XUSB_CFG_4 0x010
36#define XUSB_BASE_ADDR_SHIFT 15
37#define XUSB_BASE_ADDR_MASK 0x1ffff
38#define XUSB_CFG_ARU_C11_CSBRANGE 0x41c
39#define XUSB_CFG_CSB_BASE_ADDR 0x800
40
41/* FPCI mailbox registers */
42#define XUSB_CFG_ARU_MBOX_CMD 0x0e4
43#define MBOX_DEST_FALC BIT(27)
44#define MBOX_DEST_PME BIT(28)
45#define MBOX_DEST_SMI BIT(29)
46#define MBOX_DEST_XHCI BIT(30)
47#define MBOX_INT_EN BIT(31)
48#define XUSB_CFG_ARU_MBOX_DATA_IN 0x0e8
49#define CMD_DATA_SHIFT 0
50#define CMD_DATA_MASK 0xffffff
51#define CMD_TYPE_SHIFT 24
52#define CMD_TYPE_MASK 0xff
53#define XUSB_CFG_ARU_MBOX_DATA_OUT 0x0ec
54#define XUSB_CFG_ARU_MBOX_OWNER 0x0f0
55#define MBOX_OWNER_NONE 0
56#define MBOX_OWNER_FW 1
57#define MBOX_OWNER_SW 2
58#define XUSB_CFG_ARU_SMI_INTR 0x428
59#define MBOX_SMI_INTR_FW_HANG BIT(1)
60#define MBOX_SMI_INTR_EN BIT(3)
61
62/* IPFS registers */
63#define IPFS_XUSB_HOST_CONFIGURATION_0 0x180
64#define IPFS_EN_FPCI BIT(0)
65#define IPFS_XUSB_HOST_INTR_MASK_0 0x188
66#define IPFS_IP_INT_MASK BIT(16)
67#define IPFS_XUSB_HOST_CLKGATE_HYSTERESIS_0 0x1bc
68
69#define CSB_PAGE_SELECT_MASK 0x7fffff
70#define CSB_PAGE_SELECT_SHIFT 9
71#define CSB_PAGE_OFFSET_MASK 0x1ff
72#define CSB_PAGE_SELECT(addr) ((addr) >> (CSB_PAGE_SELECT_SHIFT) & \
73 CSB_PAGE_SELECT_MASK)
74#define CSB_PAGE_OFFSET(addr) ((addr) & CSB_PAGE_OFFSET_MASK)
75
76/* Falcon CSB registers */
77#define XUSB_FALC_CPUCTL 0x100
78#define CPUCTL_STARTCPU BIT(1)
79#define CPUCTL_STATE_HALTED BIT(4)
80#define CPUCTL_STATE_STOPPED BIT(5)
81#define XUSB_FALC_BOOTVEC 0x104
82#define XUSB_FALC_DMACTL 0x10c
83#define XUSB_FALC_IMFILLRNG1 0x154
84#define IMFILLRNG1_TAG_MASK 0xffff
85#define IMFILLRNG1_TAG_LO_SHIFT 0
86#define IMFILLRNG1_TAG_HI_SHIFT 16
87#define XUSB_FALC_IMFILLCTL 0x158
88
89/* MP CSB registers */
90#define XUSB_CSB_MP_ILOAD_ATTR 0x101a00
91#define XUSB_CSB_MP_ILOAD_BASE_LO 0x101a04
92#define XUSB_CSB_MP_ILOAD_BASE_HI 0x101a08
93#define XUSB_CSB_MP_L2IMEMOP_SIZE 0x101a10
94#define L2IMEMOP_SIZE_SRC_OFFSET_SHIFT 8
95#define L2IMEMOP_SIZE_SRC_OFFSET_MASK 0x3ff
96#define L2IMEMOP_SIZE_SRC_COUNT_SHIFT 24
97#define L2IMEMOP_SIZE_SRC_COUNT_MASK 0xff
98#define XUSB_CSB_MP_L2IMEMOP_TRIG 0x101a14
99#define L2IMEMOP_ACTION_SHIFT 24
100#define L2IMEMOP_INVALIDATE_ALL (0x40 << L2IMEMOP_ACTION_SHIFT)
101#define L2IMEMOP_LOAD_LOCKED_RESULT (0x11 << L2IMEMOP_ACTION_SHIFT)
102#define XUSB_CSB_MP_APMAP 0x10181c
103#define APMAP_BOOTPATH BIT(31)
104
105#define IMEM_BLOCK_SIZE 256
106
107struct tegra_xusb_fw_header {
108 u32 boot_loadaddr_in_imem;
109 u32 boot_codedfi_offset;
110 u32 boot_codetag;
111 u32 boot_codesize;
112 u32 phys_memaddr;
113 u16 reqphys_memsize;
114 u16 alloc_phys_memsize;
115 u32 rodata_img_offset;
116 u32 rodata_section_start;
117 u32 rodata_section_end;
118 u32 main_fnaddr;
119 u32 fwimg_cksum;
120 u32 fwimg_created_time;
121 u32 imem_resident_start;
122 u32 imem_resident_end;
123 u32 idirect_start;
124 u32 idirect_end;
125 u32 l2_imem_start;
126 u32 l2_imem_end;
127 u32 version_id;
128 u8 init_ddirect;
129 u8 reserved[3];
130 u32 phys_addr_log_buffer;
131 u32 total_log_entries;
132 u32 dequeue_ptr;
133 u32 dummy_var[2];
134 u32 fwimg_len;
135 u8 magic[8];
136 u32 ss_low_power_entry_timeout;
137 u8 num_hsic_port;
138 u8 padding[139]; /* Pad to 256 bytes */
139};
140
141struct tegra_xusb_phy_type {
142 const char *name;
143 unsigned int num;
144};
145
146struct tegra_xusb_soc {
147 const char *firmware;
148 const char * const *supply_names;
149 unsigned int num_supplies;
150 const struct tegra_xusb_phy_type *phy_types;
151 unsigned int num_types;
152
153 struct {
154 struct {
155 unsigned int offset;
156 unsigned int count;
157 } usb2, ulpi, hsic, usb3;
158 } ports;
159
160 bool scale_ss_clock;
161};
162
163struct tegra_xusb {
164 struct device *dev;
165 void __iomem *regs;
166 struct usb_hcd *hcd;
167
168 struct mutex lock;
169
170 int xhci_irq;
171 int mbox_irq;
172
173 void __iomem *ipfs_base;
174 void __iomem *fpci_base;
175
176 const struct tegra_xusb_soc *soc;
177
178 struct regulator_bulk_data *supplies;
179
180 struct tegra_xusb_padctl *padctl;
181
182 struct clk *host_clk;
183 struct clk *falcon_clk;
184 struct clk *ss_clk;
185 struct clk *ss_src_clk;
186 struct clk *hs_src_clk;
187 struct clk *fs_src_clk;
188 struct clk *pll_u_480m;
189 struct clk *clk_m;
190 struct clk *pll_e;
191
192 struct reset_control *host_rst;
193 struct reset_control *ss_rst;
194
195 struct phy **phys;
196 unsigned int num_phys;
197
198 /* Firmware loading related */
199 struct {
200 size_t size;
201 void *virt;
202 dma_addr_t phys;
203 } fw;
204};
205
206static struct hc_driver __read_mostly tegra_xhci_hc_driver;
207
208static inline u32 fpci_readl(struct tegra_xusb *tegra, unsigned int offset)
209{
210 return readl(tegra->fpci_base + offset);
211}
212
213static inline void fpci_writel(struct tegra_xusb *tegra, u32 value,
214 unsigned int offset)
215{
216 writel(value, tegra->fpci_base + offset);
217}
218
219static inline u32 ipfs_readl(struct tegra_xusb *tegra, unsigned int offset)
220{
221 return readl(tegra->ipfs_base + offset);
222}
223
224static inline void ipfs_writel(struct tegra_xusb *tegra, u32 value,
225 unsigned int offset)
226{
227 writel(value, tegra->ipfs_base + offset);
228}
229
230static u32 csb_readl(struct tegra_xusb *tegra, unsigned int offset)
231{
232 u32 page = CSB_PAGE_SELECT(offset);
233 u32 ofs = CSB_PAGE_OFFSET(offset);
234
235 fpci_writel(tegra, page, XUSB_CFG_ARU_C11_CSBRANGE);
236
237 return fpci_readl(tegra, XUSB_CFG_CSB_BASE_ADDR + ofs);
238}
239
240static void csb_writel(struct tegra_xusb *tegra, u32 value,
241 unsigned int offset)
242{
243 u32 page = CSB_PAGE_SELECT(offset);
244 u32 ofs = CSB_PAGE_OFFSET(offset);
245
246 fpci_writel(tegra, page, XUSB_CFG_ARU_C11_CSBRANGE);
247 fpci_writel(tegra, value, XUSB_CFG_CSB_BASE_ADDR + ofs);
248}
249
250static int tegra_xusb_set_ss_clk(struct tegra_xusb *tegra,
251 unsigned long rate)
252{
253 unsigned long new_parent_rate, old_parent_rate;
254 struct clk *clk = tegra->ss_src_clk;
255 unsigned int div;
256 int err;
257
258 if (clk_get_rate(clk) == rate)
259 return 0;
260
261 switch (rate) {
262 case TEGRA_XHCI_SS_HIGH_SPEED:
263 /*
264 * Reparent to PLLU_480M. Set divider first to avoid
265 * overclocking.
266 */
267 old_parent_rate = clk_get_rate(clk_get_parent(clk));
268 new_parent_rate = clk_get_rate(tegra->pll_u_480m);
269 div = new_parent_rate / rate;
270
271 err = clk_set_rate(clk, old_parent_rate / div);
272 if (err)
273 return err;
274
275 err = clk_set_parent(clk, tegra->pll_u_480m);
276 if (err)
277 return err;
278
279 /*
280 * The rate should already be correct, but set it again just
281 * to be sure.
282 */
283 err = clk_set_rate(clk, rate);
284 if (err)
285 return err;
286
287 break;
288
289 case TEGRA_XHCI_SS_LOW_SPEED:
290 /* Reparent to CLK_M */
291 err = clk_set_parent(clk, tegra->clk_m);
292 if (err)
293 return err;
294
295 err = clk_set_rate(clk, rate);
296 if (err)
297 return err;
298
299 break;
300
301 default:
302 dev_err(tegra->dev, "Invalid SS rate: %lu Hz\n", rate);
303 return -EINVAL;
304 }
305
306 if (clk_get_rate(clk) != rate) {
307 dev_err(tegra->dev, "SS clock doesn't match requested rate\n");
308 return -EINVAL;
309 }
310
311 return 0;
312}
313
314static unsigned long extract_field(u32 value, unsigned int start,
315 unsigned int count)
316{
317 return (value >> start) & ((1 << count) - 1);
318}
319
320/* Command requests from the firmware */
321enum tegra_xusb_mbox_cmd {
322 MBOX_CMD_MSG_ENABLED = 1,
323 MBOX_CMD_INC_FALC_CLOCK,
324 MBOX_CMD_DEC_FALC_CLOCK,
325 MBOX_CMD_INC_SSPI_CLOCK,
326 MBOX_CMD_DEC_SSPI_CLOCK,
327 MBOX_CMD_SET_BW, /* no ACK/NAK required */
328 MBOX_CMD_SET_SS_PWR_GATING,
329 MBOX_CMD_SET_SS_PWR_UNGATING,
330 MBOX_CMD_SAVE_DFE_CTLE_CTX,
331 MBOX_CMD_AIRPLANE_MODE_ENABLED, /* unused */
332 MBOX_CMD_AIRPLANE_MODE_DISABLED, /* unused */
333 MBOX_CMD_START_HSIC_IDLE,
334 MBOX_CMD_STOP_HSIC_IDLE,
335 MBOX_CMD_DBC_WAKE_STACK, /* unused */
336 MBOX_CMD_HSIC_PRETEND_CONNECT,
337 MBOX_CMD_RESET_SSPI,
338 MBOX_CMD_DISABLE_SS_LFPS_DETECTION,
339 MBOX_CMD_ENABLE_SS_LFPS_DETECTION,
340
341 MBOX_CMD_MAX,
342
343 /* Response message to above commands */
344 MBOX_CMD_ACK = 128,
345 MBOX_CMD_NAK
346};
347
348static const char * const mbox_cmd_name[] = {
349 [ 1] = "MSG_ENABLE",
350 [ 2] = "INC_FALCON_CLOCK",
351 [ 3] = "DEC_FALCON_CLOCK",
352 [ 4] = "INC_SSPI_CLOCK",
353 [ 5] = "DEC_SSPI_CLOCK",
354 [ 6] = "SET_BW",
355 [ 7] = "SET_SS_PWR_GATING",
356 [ 8] = "SET_SS_PWR_UNGATING",
357 [ 9] = "SAVE_DFE_CTLE_CTX",
358 [ 10] = "AIRPLANE_MODE_ENABLED",
359 [ 11] = "AIRPLANE_MODE_DISABLED",
360 [ 12] = "START_HSIC_IDLE",
361 [ 13] = "STOP_HSIC_IDLE",
362 [ 14] = "DBC_WAKE_STACK",
363 [ 15] = "HSIC_PRETEND_CONNECT",
364 [ 16] = "RESET_SSPI",
365 [ 17] = "DISABLE_SS_LFPS_DETECTION",
366 [ 18] = "ENABLE_SS_LFPS_DETECTION",
367 [128] = "ACK",
368 [129] = "NAK",
369};
370
371struct tegra_xusb_mbox_msg {
372 u32 cmd;
373 u32 data;
374};
375
376static inline u32 tegra_xusb_mbox_pack(const struct tegra_xusb_mbox_msg *msg)
377{
378 return (msg->cmd & CMD_TYPE_MASK) << CMD_TYPE_SHIFT |
379 (msg->data & CMD_DATA_MASK) << CMD_DATA_SHIFT;
380}
381static inline void tegra_xusb_mbox_unpack(struct tegra_xusb_mbox_msg *msg,
382 u32 value)
383{
384 msg->cmd = (value >> CMD_TYPE_SHIFT) & CMD_TYPE_MASK;
385 msg->data = (value >> CMD_DATA_SHIFT) & CMD_DATA_MASK;
386}
387
388static bool tegra_xusb_mbox_cmd_requires_ack(enum tegra_xusb_mbox_cmd cmd)
389{
390 switch (cmd) {
391 case MBOX_CMD_SET_BW:
392 case MBOX_CMD_ACK:
393 case MBOX_CMD_NAK:
394 return false;
395
396 default:
397 return true;
398 }
399}
400
401static int tegra_xusb_mbox_send(struct tegra_xusb *tegra,
402 const struct tegra_xusb_mbox_msg *msg)
403{
404 bool wait_for_idle = false;
405 u32 value;
406
407 /*
408 * Acquire the mailbox. The firmware still owns the mailbox for
409 * ACK/NAK messages.
410 */
411 if (!(msg->cmd == MBOX_CMD_ACK || msg->cmd == MBOX_CMD_NAK)) {
412 value = fpci_readl(tegra, XUSB_CFG_ARU_MBOX_OWNER);
413 if (value != MBOX_OWNER_NONE) {
414 dev_err(tegra->dev, "mailbox is busy\n");
415 return -EBUSY;
416 }
417
418 fpci_writel(tegra, MBOX_OWNER_SW, XUSB_CFG_ARU_MBOX_OWNER);
419
420 value = fpci_readl(tegra, XUSB_CFG_ARU_MBOX_OWNER);
421 if (value != MBOX_OWNER_SW) {
422 dev_err(tegra->dev, "failed to acquire mailbox\n");
423 return -EBUSY;
424 }
425
426 wait_for_idle = true;
427 }
428
429 value = tegra_xusb_mbox_pack(msg);
430 fpci_writel(tegra, value, XUSB_CFG_ARU_MBOX_DATA_IN);
431
432 value = fpci_readl(tegra, XUSB_CFG_ARU_MBOX_CMD);
433 value |= MBOX_INT_EN | MBOX_DEST_FALC;
434 fpci_writel(tegra, value, XUSB_CFG_ARU_MBOX_CMD);
435
436 if (wait_for_idle) {
437 unsigned long timeout = jiffies + msecs_to_jiffies(250);
438
439 while (time_before(jiffies, timeout)) {
440 value = fpci_readl(tegra, XUSB_CFG_ARU_MBOX_OWNER);
441 if (value == MBOX_OWNER_NONE)
442 break;
443
444 usleep_range(10, 20);
445 }
446
447 if (time_after(jiffies, timeout))
448 value = fpci_readl(tegra, XUSB_CFG_ARU_MBOX_OWNER);
449
450 if (value != MBOX_OWNER_NONE)
451 return -ETIMEDOUT;
452 }
453
454 return 0;
455}
456
457static irqreturn_t tegra_xusb_mbox_irq(int irq, void *data)
458{
459 struct tegra_xusb *tegra = data;
460 u32 value;
461
462 /* clear mailbox interrupts */
463 value = fpci_readl(tegra, XUSB_CFG_ARU_SMI_INTR);
464 fpci_writel(tegra, value, XUSB_CFG_ARU_SMI_INTR);
465
466 if (value & MBOX_SMI_INTR_FW_HANG)
467 dev_err(tegra->dev, "controller firmware hang\n");
468
469 return IRQ_WAKE_THREAD;
470}
471
472static void tegra_xusb_mbox_handle(struct tegra_xusb *tegra,
473 const struct tegra_xusb_mbox_msg *msg)
474{
475 struct tegra_xusb_padctl *padctl = tegra->padctl;
476 const struct tegra_xusb_soc *soc = tegra->soc;
477 struct device *dev = tegra->dev;
478 struct tegra_xusb_mbox_msg rsp;
479 unsigned long mask;
480 unsigned int port;
481 bool idle, enable;
482 int err;
483
484 memset(&rsp, 0, sizeof(rsp));
485
486 switch (msg->cmd) {
487 case MBOX_CMD_INC_FALC_CLOCK:
488 case MBOX_CMD_DEC_FALC_CLOCK:
489 rsp.data = clk_get_rate(tegra->falcon_clk) / 1000;
490 if (rsp.data != msg->data)
491 rsp.cmd = MBOX_CMD_NAK;
492 else
493 rsp.cmd = MBOX_CMD_ACK;
494
495 break;
496
497 case MBOX_CMD_INC_SSPI_CLOCK:
498 case MBOX_CMD_DEC_SSPI_CLOCK:
499 if (tegra->soc->scale_ss_clock) {
500 err = tegra_xusb_set_ss_clk(tegra, msg->data * 1000);
501 if (err < 0)
502 rsp.cmd = MBOX_CMD_NAK;
503 else
504 rsp.cmd = MBOX_CMD_ACK;
505
506 rsp.data = clk_get_rate(tegra->ss_src_clk) / 1000;
507 } else {
508 rsp.cmd = MBOX_CMD_ACK;
509 rsp.data = msg->data;
510 }
511
512 break;
513
514 case MBOX_CMD_SET_BW:
515 /*
516 * TODO: Request bandwidth once EMC scaling is supported.
517 * Ignore for now since ACK/NAK is not required for SET_BW
518 * messages.
519 */
520 break;
521
522 case MBOX_CMD_SAVE_DFE_CTLE_CTX:
523 err = tegra_xusb_padctl_usb3_save_context(padctl, msg->data);
524 if (err < 0) {
525 dev_err(dev, "failed to save context for USB3#%u: %d\n",
526 msg->data, err);
527 rsp.cmd = MBOX_CMD_NAK;
528 } else {
529 rsp.cmd = MBOX_CMD_ACK;
530 }
531
532 rsp.data = msg->data;
533 break;
534
535 case MBOX_CMD_START_HSIC_IDLE:
536 case MBOX_CMD_STOP_HSIC_IDLE:
537 if (msg->cmd == MBOX_CMD_STOP_HSIC_IDLE)
538 idle = false;
539 else
540 idle = true;
541
542 mask = extract_field(msg->data, 1 + soc->ports.hsic.offset,
543 soc->ports.hsic.count);
544
545 for_each_set_bit(port, &mask, 32) {
546 err = tegra_xusb_padctl_hsic_set_idle(padctl, port,
547 idle);
548 if (err < 0)
549 break;
550 }
551
552 if (err < 0) {
553 dev_err(dev, "failed to set HSIC#%u %s: %d\n", port,
554 idle ? "idle" : "busy", err);
555 rsp.cmd = MBOX_CMD_NAK;
556 } else {
557 rsp.cmd = MBOX_CMD_ACK;
558 }
559
560 rsp.data = msg->data;
561 break;
562
563 case MBOX_CMD_DISABLE_SS_LFPS_DETECTION:
564 case MBOX_CMD_ENABLE_SS_LFPS_DETECTION:
565 if (msg->cmd == MBOX_CMD_DISABLE_SS_LFPS_DETECTION)
566 enable = false;
567 else
568 enable = true;
569
570 mask = extract_field(msg->data, 1 + soc->ports.usb3.offset,
571 soc->ports.usb3.count);
572
573 for_each_set_bit(port, &mask, soc->ports.usb3.count) {
574 err = tegra_xusb_padctl_usb3_set_lfps_detect(padctl,
575 port,
576 enable);
577 if (err < 0)
578 break;
579 }
580
581 if (err < 0) {
582 dev_err(dev,
583 "failed to %s LFPS detection on USB3#%u: %d\n",
584 enable ? "enable" : "disable", port, err);
585 rsp.cmd = MBOX_CMD_NAK;
586 } else {
587 rsp.cmd = MBOX_CMD_ACK;
588 }
589
590 rsp.data = msg->data;
591 break;
592
593 default:
594 dev_warn(dev, "unknown message: %#x\n", msg->cmd);
595 break;
596 }
597
598 if (rsp.cmd) {
599 const char *cmd = (rsp.cmd == MBOX_CMD_ACK) ? "ACK" : "NAK";
600
601 err = tegra_xusb_mbox_send(tegra, &rsp);
602 if (err < 0)
603 dev_err(dev, "failed to send %s: %d\n", cmd, err);
604 }
605}
606
607static irqreturn_t tegra_xusb_mbox_thread(int irq, void *data)
608{
609 struct tegra_xusb *tegra = data;
610 struct tegra_xusb_mbox_msg msg;
611 u32 value;
612
613 mutex_lock(&tegra->lock);
614
615 value = fpci_readl(tegra, XUSB_CFG_ARU_MBOX_DATA_OUT);
616 tegra_xusb_mbox_unpack(&msg, value);
617
618 value = fpci_readl(tegra, XUSB_CFG_ARU_MBOX_CMD);
619 value &= ~MBOX_DEST_SMI;
620 fpci_writel(tegra, value, XUSB_CFG_ARU_MBOX_CMD);
621
622 /* clear mailbox owner if no ACK/NAK is required */
623 if (!tegra_xusb_mbox_cmd_requires_ack(msg.cmd))
624 fpci_writel(tegra, MBOX_OWNER_NONE, XUSB_CFG_ARU_MBOX_OWNER);
625
626 tegra_xusb_mbox_handle(tegra, &msg);
627
628 mutex_unlock(&tegra->lock);
629 return IRQ_HANDLED;
630}
631
632static void tegra_xusb_ipfs_config(struct tegra_xusb *tegra,
633 struct resource *regs)
634{
635 u32 value;
636
637 value = ipfs_readl(tegra, IPFS_XUSB_HOST_CONFIGURATION_0);
638 value |= IPFS_EN_FPCI;
639 ipfs_writel(tegra, value, IPFS_XUSB_HOST_CONFIGURATION_0);
640
641 usleep_range(10, 20);
642
643 /* Program BAR0 space */
644 value = fpci_readl(tegra, XUSB_CFG_4);
645 value &= ~(XUSB_BASE_ADDR_MASK << XUSB_BASE_ADDR_SHIFT);
646 value |= regs->start & (XUSB_BASE_ADDR_MASK << XUSB_BASE_ADDR_SHIFT);
647 fpci_writel(tegra, value, XUSB_CFG_4);
648
649 usleep_range(100, 200);
650
651 /* Enable bus master */
652 value = fpci_readl(tegra, XUSB_CFG_1);
653 value |= XUSB_IO_SPACE_EN | XUSB_MEM_SPACE_EN | XUSB_BUS_MASTER_EN;
654 fpci_writel(tegra, value, XUSB_CFG_1);
655
656 /* Enable interrupt assertion */
657 value = ipfs_readl(tegra, IPFS_XUSB_HOST_INTR_MASK_0);
658 value |= IPFS_IP_INT_MASK;
659 ipfs_writel(tegra, value, IPFS_XUSB_HOST_INTR_MASK_0);
660
661 /* Set hysteresis */
662 ipfs_writel(tegra, 0x80, IPFS_XUSB_HOST_CLKGATE_HYSTERESIS_0);
663}
664
665static int tegra_xusb_clk_enable(struct tegra_xusb *tegra)
666{
667 int err;
668
669 err = clk_prepare_enable(tegra->pll_e);
670 if (err < 0)
671 return err;
672
673 err = clk_prepare_enable(tegra->host_clk);
674 if (err < 0)
675 goto disable_plle;
676
677 err = clk_prepare_enable(tegra->ss_clk);
678 if (err < 0)
679 goto disable_host;
680
681 err = clk_prepare_enable(tegra->falcon_clk);
682 if (err < 0)
683 goto disable_ss;
684
685 err = clk_prepare_enable(tegra->fs_src_clk);
686 if (err < 0)
687 goto disable_falc;
688
689 err = clk_prepare_enable(tegra->hs_src_clk);
690 if (err < 0)
691 goto disable_fs_src;
692
693 if (tegra->soc->scale_ss_clock) {
694 err = tegra_xusb_set_ss_clk(tegra, TEGRA_XHCI_SS_HIGH_SPEED);
695 if (err < 0)
696 goto disable_hs_src;
697 }
698
699 return 0;
700
701disable_hs_src:
702 clk_disable_unprepare(tegra->hs_src_clk);
703disable_fs_src:
704 clk_disable_unprepare(tegra->fs_src_clk);
705disable_falc:
706 clk_disable_unprepare(tegra->falcon_clk);
707disable_ss:
708 clk_disable_unprepare(tegra->ss_clk);
709disable_host:
710 clk_disable_unprepare(tegra->host_clk);
711disable_plle:
712 clk_disable_unprepare(tegra->pll_e);
713 return err;
714}
715
716static void tegra_xusb_clk_disable(struct tegra_xusb *tegra)
717{
718 clk_disable_unprepare(tegra->pll_e);
719 clk_disable_unprepare(tegra->host_clk);
720 clk_disable_unprepare(tegra->ss_clk);
721 clk_disable_unprepare(tegra->falcon_clk);
722 clk_disable_unprepare(tegra->fs_src_clk);
723 clk_disable_unprepare(tegra->hs_src_clk);
724}
725
726static int tegra_xusb_phy_enable(struct tegra_xusb *tegra)
727{
728 unsigned int i;
729 int err;
730
731 for (i = 0; i < tegra->num_phys; i++) {
732 err = phy_init(tegra->phys[i]);
733 if (err)
734 goto disable_phy;
735
736 err = phy_power_on(tegra->phys[i]);
737 if (err) {
738 phy_exit(tegra->phys[i]);
739 goto disable_phy;
740 }
741 }
742
743 return 0;
744
745disable_phy:
746 while (i--) {
747 phy_power_off(tegra->phys[i]);
748 phy_exit(tegra->phys[i]);
749 }
750
751 return err;
752}
753
754static void tegra_xusb_phy_disable(struct tegra_xusb *tegra)
755{
756 unsigned int i;
757
758 for (i = 0; i < tegra->num_phys; i++) {
759 phy_power_off(tegra->phys[i]);
760 phy_exit(tegra->phys[i]);
761 }
762}
763
764static int tegra_xusb_load_firmware(struct tegra_xusb *tegra)
765{
766 unsigned int code_tag_blocks, code_size_blocks, code_blocks;
767 struct tegra_xusb_fw_header *header;
768 struct device *dev = tegra->dev;
769 const struct firmware *fw;
770 unsigned long timeout;
771 time64_t timestamp;
772 struct tm time;
773 u64 address;
774 u32 value;
775 int err;
776
777 err = request_firmware(&fw, tegra->soc->firmware, tegra->dev);
778 if (err < 0) {
779 dev_err(tegra->dev, "failed to request firmware: %d\n", err);
780 return err;
781 }
782
783 /* Load Falcon controller with its firmware. */
784 header = (struct tegra_xusb_fw_header *)fw->data;
785 tegra->fw.size = le32_to_cpu(header->fwimg_len);
786
787 tegra->fw.virt = dma_alloc_coherent(tegra->dev, tegra->fw.size,
788 &tegra->fw.phys, GFP_KERNEL);
789 if (!tegra->fw.virt) {
790 dev_err(tegra->dev, "failed to allocate memory for firmware\n");
791 release_firmware(fw);
792 return -ENOMEM;
793 }
794
795 header = (struct tegra_xusb_fw_header *)tegra->fw.virt;
796 memcpy(tegra->fw.virt, fw->data, tegra->fw.size);
797 release_firmware(fw);
798
799 if (csb_readl(tegra, XUSB_CSB_MP_ILOAD_BASE_LO) != 0) {
800 dev_info(dev, "Firmware already loaded, Falcon state %#x\n",
801 csb_readl(tegra, XUSB_FALC_CPUCTL));
802 return 0;
803 }
804
805 /* Program the size of DFI into ILOAD_ATTR. */
806 csb_writel(tegra, tegra->fw.size, XUSB_CSB_MP_ILOAD_ATTR);
807
808 /*
809 * Boot code of the firmware reads the ILOAD_BASE registers
810 * to get to the start of the DFI in system memory.
811 */
812 address = tegra->fw.phys + sizeof(*header);
813 csb_writel(tegra, address >> 32, XUSB_CSB_MP_ILOAD_BASE_HI);
814 csb_writel(tegra, address, XUSB_CSB_MP_ILOAD_BASE_LO);
815
816 /* Set BOOTPATH to 1 in APMAP. */
817 csb_writel(tegra, APMAP_BOOTPATH, XUSB_CSB_MP_APMAP);
818
819 /* Invalidate L2IMEM. */
820 csb_writel(tegra, L2IMEMOP_INVALIDATE_ALL, XUSB_CSB_MP_L2IMEMOP_TRIG);
821
822 /*
823 * Initiate fetch of bootcode from system memory into L2IMEM.
824 * Program bootcode location and size in system memory.
825 */
826 code_tag_blocks = DIV_ROUND_UP(le32_to_cpu(header->boot_codetag),
827 IMEM_BLOCK_SIZE);
828 code_size_blocks = DIV_ROUND_UP(le32_to_cpu(header->boot_codesize),
829 IMEM_BLOCK_SIZE);
830 code_blocks = code_tag_blocks + code_size_blocks;
831
832 value = ((code_tag_blocks & L2IMEMOP_SIZE_SRC_OFFSET_MASK) <<
833 L2IMEMOP_SIZE_SRC_OFFSET_SHIFT) |
834 ((code_size_blocks & L2IMEMOP_SIZE_SRC_COUNT_MASK) <<
835 L2IMEMOP_SIZE_SRC_COUNT_SHIFT);
836 csb_writel(tegra, value, XUSB_CSB_MP_L2IMEMOP_SIZE);
837
838 /* Trigger L2IMEM load operation. */
839 csb_writel(tegra, L2IMEMOP_LOAD_LOCKED_RESULT,
840 XUSB_CSB_MP_L2IMEMOP_TRIG);
841
842 /* Setup Falcon auto-fill. */
843 csb_writel(tegra, code_size_blocks, XUSB_FALC_IMFILLCTL);
844
845 value = ((code_tag_blocks & IMFILLRNG1_TAG_MASK) <<
846 IMFILLRNG1_TAG_LO_SHIFT) |
847 ((code_blocks & IMFILLRNG1_TAG_MASK) <<
848 IMFILLRNG1_TAG_HI_SHIFT);
849 csb_writel(tegra, value, XUSB_FALC_IMFILLRNG1);
850
851 csb_writel(tegra, 0, XUSB_FALC_DMACTL);
852
853 msleep(50);
854
855 csb_writel(tegra, le32_to_cpu(header->boot_codetag),
856 XUSB_FALC_BOOTVEC);
857
858 /* Boot Falcon CPU and wait for it to enter the STOPPED (idle) state. */
859 timeout = jiffies + msecs_to_jiffies(5);
860
861 csb_writel(tegra, CPUCTL_STARTCPU, XUSB_FALC_CPUCTL);
862
863 while (time_before(jiffies, timeout)) {
864 if (csb_readl(tegra, XUSB_FALC_CPUCTL) == CPUCTL_STATE_STOPPED)
865 break;
866
867 usleep_range(100, 200);
868 }
869
870 if (csb_readl(tegra, XUSB_FALC_CPUCTL) != CPUCTL_STATE_STOPPED) {
871 dev_err(dev, "Falcon failed to start, state: %#x\n",
872 csb_readl(tegra, XUSB_FALC_CPUCTL));
873 return -EIO;
874 }
875
876 timestamp = le32_to_cpu(header->fwimg_created_time);
877 time64_to_tm(timestamp, 0, &time);
878
879 dev_info(dev, "Firmware timestamp: %ld-%02d-%02d %02d:%02d:%02d UTC\n",
880 time.tm_year + 1900, time.tm_mon + 1, time.tm_mday,
881 time.tm_hour, time.tm_min, time.tm_sec);
882
883 return 0;
884}
885
886static int tegra_xusb_probe(struct platform_device *pdev)
887{
888 struct tegra_xusb_mbox_msg msg;
889 struct resource *res, *regs;
890 struct tegra_xusb *tegra;
891 struct xhci_hcd *xhci;
892 unsigned int i, j, k;
893 struct phy *phy;
894 int err;
895
896 BUILD_BUG_ON(sizeof(struct tegra_xusb_fw_header) != 256);
897
898 tegra = devm_kzalloc(&pdev->dev, sizeof(*tegra), GFP_KERNEL);
899 if (!tegra)
900 return -ENOMEM;
901
902 tegra->soc = of_device_get_match_data(&pdev->dev);
903 mutex_init(&tegra->lock);
904 tegra->dev = &pdev->dev;
905
906 regs = platform_get_resource(pdev, IORESOURCE_MEM, 0);
907 tegra->regs = devm_ioremap_resource(&pdev->dev, regs);
908 if (IS_ERR(tegra->regs))
909 return PTR_ERR(tegra->regs);
910
911 res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
912 tegra->fpci_base = devm_ioremap_resource(&pdev->dev, res);
913 if (IS_ERR(tegra->fpci_base))
914 return PTR_ERR(tegra->fpci_base);
915
916 res = platform_get_resource(pdev, IORESOURCE_MEM, 2);
917 tegra->ipfs_base = devm_ioremap_resource(&pdev->dev, res);
918 if (IS_ERR(tegra->ipfs_base))
919 return PTR_ERR(tegra->ipfs_base);
920
921 tegra->xhci_irq = platform_get_irq(pdev, 0);
922 if (tegra->xhci_irq < 0)
923 return tegra->xhci_irq;
924
925 tegra->mbox_irq = platform_get_irq(pdev, 1);
926 if (tegra->mbox_irq < 0)
927 return tegra->mbox_irq;
928
929 tegra->padctl = tegra_xusb_padctl_get(&pdev->dev);
930 if (IS_ERR(tegra->padctl))
931 return PTR_ERR(tegra->padctl);
932
933 tegra->host_rst = devm_reset_control_get(&pdev->dev, "xusb_host");
934 if (IS_ERR(tegra->host_rst)) {
935 err = PTR_ERR(tegra->host_rst);
936 dev_err(&pdev->dev, "failed to get xusb_host reset: %d\n", err);
937 goto put_padctl;
938 }
939
940 tegra->ss_rst = devm_reset_control_get(&pdev->dev, "xusb_ss");
941 if (IS_ERR(tegra->ss_rst)) {
942 err = PTR_ERR(tegra->ss_rst);
943 dev_err(&pdev->dev, "failed to get xusb_ss reset: %d\n", err);
944 goto put_padctl;
945 }
946
947 tegra->host_clk = devm_clk_get(&pdev->dev, "xusb_host");
948 if (IS_ERR(tegra->host_clk)) {
949 err = PTR_ERR(tegra->host_clk);
950 dev_err(&pdev->dev, "failed to get xusb_host: %d\n", err);
951 goto put_padctl;
952 }
953
954 tegra->falcon_clk = devm_clk_get(&pdev->dev, "xusb_falcon_src");
955 if (IS_ERR(tegra->falcon_clk)) {
956 err = PTR_ERR(tegra->falcon_clk);
957 dev_err(&pdev->dev, "failed to get xusb_falcon_src: %d\n", err);
958 goto put_padctl;
959 }
960
961 tegra->ss_clk = devm_clk_get(&pdev->dev, "xusb_ss");
962 if (IS_ERR(tegra->ss_clk)) {
963 err = PTR_ERR(tegra->ss_clk);
964 dev_err(&pdev->dev, "failed to get xusb_ss: %d\n", err);
965 goto put_padctl;
966 }
967
968 tegra->ss_src_clk = devm_clk_get(&pdev->dev, "xusb_ss_src");
969 if (IS_ERR(tegra->ss_src_clk)) {
970 err = PTR_ERR(tegra->ss_src_clk);
971 dev_err(&pdev->dev, "failed to get xusb_ss_src: %d\n", err);
972 goto put_padctl;
973 }
974
975 tegra->hs_src_clk = devm_clk_get(&pdev->dev, "xusb_hs_src");
976 if (IS_ERR(tegra->hs_src_clk)) {
977 err = PTR_ERR(tegra->hs_src_clk);
978 dev_err(&pdev->dev, "failed to get xusb_hs_src: %d\n", err);
979 goto put_padctl;
980 }
981
982 tegra->fs_src_clk = devm_clk_get(&pdev->dev, "xusb_fs_src");
983 if (IS_ERR(tegra->fs_src_clk)) {
984 err = PTR_ERR(tegra->fs_src_clk);
985 dev_err(&pdev->dev, "failed to get xusb_fs_src: %d\n", err);
986 goto put_padctl;
987 }
988
989 tegra->pll_u_480m = devm_clk_get(&pdev->dev, "pll_u_480m");
990 if (IS_ERR(tegra->pll_u_480m)) {
991 err = PTR_ERR(tegra->pll_u_480m);
992 dev_err(&pdev->dev, "failed to get pll_u_480m: %d\n", err);
993 goto put_padctl;
994 }
995
996 tegra->clk_m = devm_clk_get(&pdev->dev, "clk_m");
997 if (IS_ERR(tegra->clk_m)) {
998 err = PTR_ERR(tegra->clk_m);
999 dev_err(&pdev->dev, "failed to get clk_m: %d\n", err);
1000 goto put_padctl;
1001 }
1002
1003 tegra->pll_e = devm_clk_get(&pdev->dev, "pll_e");
1004 if (IS_ERR(tegra->pll_e)) {
1005 err = PTR_ERR(tegra->pll_e);
1006 dev_err(&pdev->dev, "failed to get pll_e: %d\n", err);
1007 goto put_padctl;
1008 }
1009
1010 tegra->supplies = devm_kcalloc(&pdev->dev, tegra->soc->num_supplies,
1011 sizeof(*tegra->supplies), GFP_KERNEL);
1012 if (!tegra->supplies) {
1013 err = -ENOMEM;
1014 goto put_padctl;
1015 }
1016
1017 for (i = 0; i < tegra->soc->num_supplies; i++)
1018 tegra->supplies[i].supply = tegra->soc->supply_names[i];
1019
1020 err = devm_regulator_bulk_get(&pdev->dev, tegra->soc->num_supplies,
1021 tegra->supplies);
1022 if (err) {
1023 dev_err(&pdev->dev, "failed to get regulators: %d\n", err);
1024 goto put_padctl;
1025 }
1026
1027 for (i = 0; i < tegra->soc->num_types; i++)
1028 tegra->num_phys += tegra->soc->phy_types[i].num;
1029
1030 tegra->phys = devm_kcalloc(&pdev->dev, tegra->num_phys,
1031 sizeof(*tegra->phys), GFP_KERNEL);
1032 if (!tegra->phys) {
1033 err = -ENOMEM;
1034 goto put_padctl;
1035 }
1036
1037 for (i = 0, k = 0; i < tegra->soc->num_types; i++) {
1038 char prop[8];
1039
1040 for (j = 0; j < tegra->soc->phy_types[i].num; j++) {
1041 snprintf(prop, sizeof(prop), "%s-%d",
1042 tegra->soc->phy_types[i].name, j);
1043
1044 phy = devm_phy_optional_get(&pdev->dev, prop);
1045 if (IS_ERR(phy)) {
1046 dev_err(&pdev->dev,
1047 "failed to get PHY %s: %ld\n", prop,
1048 PTR_ERR(phy));
1049 err = PTR_ERR(phy);
1050 goto put_padctl;
1051 }
1052
1053 tegra->phys[k++] = phy;
1054 }
1055 }
1056
1057 err = tegra_xusb_clk_enable(tegra);
1058 if (err) {
1059 dev_err(&pdev->dev, "failed to enable clocks: %d\n", err);
1060 goto put_padctl;
1061 }
1062
1063 err = regulator_bulk_enable(tegra->soc->num_supplies, tegra->supplies);
1064 if (err) {
1065 dev_err(&pdev->dev, "failed to enable regulators: %d\n", err);
1066 goto disable_clk;
1067 }
1068
1069 err = tegra_xusb_phy_enable(tegra);
1070 if (err < 0) {
1071 dev_err(&pdev->dev, "failed to enable PHYs: %d\n", err);
1072 goto disable_regulator;
1073 }
1074
1075 tegra_xusb_ipfs_config(tegra, regs);
1076
1077 err = tegra_xusb_load_firmware(tegra);
1078 if (err < 0) {
1079 dev_err(&pdev->dev, "failed to load firmware: %d\n", err);
1080 goto disable_phy;
1081 }
1082
1083 tegra->hcd = usb_create_hcd(&tegra_xhci_hc_driver, &pdev->dev,
1084 dev_name(&pdev->dev));
1085 if (!tegra->hcd) {
1086 err = -ENOMEM;
1087 goto disable_phy;
1088 }
1089
1090 /*
1091 * This must happen after usb_create_hcd(), because usb_create_hcd()
1092 * will overwrite the drvdata of the device with the hcd it creates.
1093 */
1094 platform_set_drvdata(pdev, tegra);
1095
1096 tegra->hcd->regs = tegra->regs;
1097 tegra->hcd->rsrc_start = regs->start;
1098 tegra->hcd->rsrc_len = resource_size(regs);
1099
1100 err = usb_add_hcd(tegra->hcd, tegra->xhci_irq, IRQF_SHARED);
1101 if (err < 0) {
1102 dev_err(&pdev->dev, "failed to add USB HCD: %d\n", err);
1103 goto put_usb2;
1104 }
1105
1106 device_wakeup_enable(tegra->hcd->self.controller);
1107
1108 xhci = hcd_to_xhci(tegra->hcd);
1109
1110 xhci->shared_hcd = usb_create_shared_hcd(&tegra_xhci_hc_driver,
1111 &pdev->dev,
1112 dev_name(&pdev->dev),
1113 tegra->hcd);
1114 if (!xhci->shared_hcd) {
1115 dev_err(&pdev->dev, "failed to create shared HCD\n");
1116 err = -ENOMEM;
1117 goto remove_usb2;
1118 }
1119
1120 err = usb_add_hcd(xhci->shared_hcd, tegra->xhci_irq, IRQF_SHARED);
1121 if (err < 0) {
1122 dev_err(&pdev->dev, "failed to add shared HCD: %d\n", err);
1123 goto put_usb3;
1124 }
1125
1126 mutex_lock(&tegra->lock);
1127
1128 /* Enable firmware messages from controller. */
1129 msg.cmd = MBOX_CMD_MSG_ENABLED;
1130 msg.data = 0;
1131
1132 err = tegra_xusb_mbox_send(tegra, &msg);
1133 if (err < 0) {
1134 dev_err(&pdev->dev, "failed to enable messages: %d\n", err);
1135 mutex_unlock(&tegra->lock);
1136 goto remove_usb3;
1137 }
1138
1139 mutex_unlock(&tegra->lock);
1140
1141 err = devm_request_threaded_irq(&pdev->dev, tegra->mbox_irq,
1142 tegra_xusb_mbox_irq,
1143 tegra_xusb_mbox_thread, 0,
1144 dev_name(&pdev->dev), tegra);
1145 if (err < 0) {
1146 dev_err(&pdev->dev, "failed to request IRQ: %d\n", err);
1147 goto remove_usb3;
1148 }
1149
1150 return 0;
1151
1152remove_usb3:
1153 usb_remove_hcd(xhci->shared_hcd);
1154put_usb3:
1155 usb_put_hcd(xhci->shared_hcd);
1156remove_usb2:
1157 usb_remove_hcd(tegra->hcd);
1158put_usb2:
1159 usb_put_hcd(tegra->hcd);
1160disable_phy:
1161 tegra_xusb_phy_disable(tegra);
1162disable_regulator:
1163 regulator_bulk_disable(tegra->soc->num_supplies, tegra->supplies);
1164disable_clk:
1165 tegra_xusb_clk_disable(tegra);
1166put_padctl:
1167 tegra_xusb_padctl_put(tegra->padctl);
1168 return err;
1169}
1170
1171static int tegra_xusb_remove(struct platform_device *pdev)
1172{
1173 struct tegra_xusb *tegra = platform_get_drvdata(pdev);
1174 struct xhci_hcd *xhci = hcd_to_xhci(tegra->hcd);
1175
1176 usb_remove_hcd(xhci->shared_hcd);
1177 usb_put_hcd(xhci->shared_hcd);
1178 usb_remove_hcd(tegra->hcd);
1179 usb_put_hcd(tegra->hcd);
1180
1181 dma_free_coherent(&pdev->dev, tegra->fw.size, tegra->fw.virt,
1182 tegra->fw.phys);
1183
1184 tegra_xusb_phy_disable(tegra);
1185 regulator_bulk_disable(tegra->soc->num_supplies, tegra->supplies);
1186 tegra_xusb_clk_disable(tegra);
1187
1188 tegra_xusb_padctl_put(tegra->padctl);
1189
1190 return 0;
1191}
1192
1193#ifdef CONFIG_PM_SLEEP
1194static int tegra_xusb_suspend(struct device *dev)
1195{
1196 struct tegra_xusb *tegra = dev_get_drvdata(dev);
1197 struct xhci_hcd *xhci = hcd_to_xhci(tegra->hcd);
1198 bool wakeup = device_may_wakeup(dev);
1199
1200 /* TODO: Powergate controller across suspend/resume. */
1201 return xhci_suspend(xhci, wakeup);
1202}
1203
1204static int tegra_xusb_resume(struct device *dev)
1205{
1206 struct tegra_xusb *tegra = dev_get_drvdata(dev);
1207 struct xhci_hcd *xhci = hcd_to_xhci(tegra->hcd);
1208
1209 return xhci_resume(xhci, 0);
1210}
1211#endif
1212
1213static const struct dev_pm_ops tegra_xusb_pm_ops = {
1214 SET_SYSTEM_SLEEP_PM_OPS(tegra_xusb_suspend, tegra_xusb_resume)
1215};
1216
1217static const char * const tegra124_supply_names[] = {
1218 "avddio-pex",
1219 "dvddio-pex",
1220 "avdd-usb",
1221 "avdd-pll-utmip",
1222 "avdd-pll-erefe",
1223 "avdd-usb-ss-pll",
1224 "hvdd-usb-ss",
1225 "hvdd-usb-ss-pll-e",
1226};
1227
1228static const struct tegra_xusb_phy_type tegra124_phy_types[] = {
1229 { .name = "usb3", .num = 2, },
1230 { .name = "usb2", .num = 3, },
1231 { .name = "hsic", .num = 2, },
1232};
1233
1234static const struct tegra_xusb_soc tegra124_soc = {
1235 .firmware = "nvidia/tegra124/xusb.bin",
1236 .supply_names = tegra124_supply_names,
1237 .num_supplies = ARRAY_SIZE(tegra124_supply_names),
1238 .phy_types = tegra124_phy_types,
1239 .num_types = ARRAY_SIZE(tegra124_phy_types),
1240 .ports = {
1241 .usb2 = { .offset = 4, .count = 4, },
1242 .hsic = { .offset = 6, .count = 2, },
1243 .usb3 = { .offset = 0, .count = 2, },
1244 },
1245 .scale_ss_clock = true,
1246};
1247MODULE_FIRMWARE("nvidia/tegra124/xusb.bin");
1248
1249static const char * const tegra210_supply_names[] = {
1250 "dvddio-pex",
1251 "hvddio-pex",
1252 "avdd-usb",
1253 "avdd-pll-utmip",
1254 "avdd-pll-uerefe",
1255 "dvdd-pex-pll",
1256 "hvdd-pex-pll-e",
1257};
1258
1259static const struct tegra_xusb_phy_type tegra210_phy_types[] = {
1260 { .name = "usb3", .num = 4, },
1261 { .name = "usb2", .num = 4, },
1262 { .name = "hsic", .num = 1, },
1263};
1264
1265static const struct tegra_xusb_soc tegra210_soc = {
1266 .firmware = "nvidia/tegra210/xusb.bin",
1267 .supply_names = tegra210_supply_names,
1268 .num_supplies = ARRAY_SIZE(tegra210_supply_names),
1269 .phy_types = tegra210_phy_types,
1270 .num_types = ARRAY_SIZE(tegra210_phy_types),
1271 .ports = {
1272 .usb2 = { .offset = 4, .count = 4, },
1273 .hsic = { .offset = 8, .count = 1, },
1274 .usb3 = { .offset = 0, .count = 4, },
1275 },
1276 .scale_ss_clock = false,
1277};
1278MODULE_FIRMWARE("nvidia/tegra210/xusb.bin");
1279
1280static const struct of_device_id tegra_xusb_of_match[] = {
1281 { .compatible = "nvidia,tegra124-xusb", .data = &tegra124_soc },
1282 { .compatible = "nvidia,tegra210-xusb", .data = &tegra210_soc },
1283 { },
1284};
1285MODULE_DEVICE_TABLE(of, tegra_xusb_of_match);
1286
1287static struct platform_driver tegra_xusb_driver = {
1288 .probe = tegra_xusb_probe,
1289 .remove = tegra_xusb_remove,
1290 .driver = {
1291 .name = "tegra-xusb",
1292 .pm = &tegra_xusb_pm_ops,
1293 .of_match_table = tegra_xusb_of_match,
1294 },
1295};
1296
1297static void tegra_xhci_quirks(struct device *dev, struct xhci_hcd *xhci)
1298{
1299 xhci->quirks |= XHCI_PLAT;
1300}
1301
1302static int tegra_xhci_setup(struct usb_hcd *hcd)
1303{
1304 return xhci_gen_setup(hcd, tegra_xhci_quirks);
1305}
1306
1307static const struct xhci_driver_overrides tegra_xhci_overrides __initconst = {
1308 .reset = tegra_xhci_setup,
1309};
1310
1311static int __init tegra_xusb_init(void)
1312{
1313 xhci_init_driver(&tegra_xhci_hc_driver, &tegra_xhci_overrides);
1314
1315 return platform_driver_register(&tegra_xusb_driver);
1316}
1317module_init(tegra_xusb_init);
1318
1319static void __exit tegra_xusb_exit(void)
1320{
1321 platform_driver_unregister(&tegra_xusb_driver);
1322}
1323module_exit(tegra_xusb_exit);
1324
1325MODULE_AUTHOR("Andrew Bresticker <abrestic@chromium.org>");
1326MODULE_DESCRIPTION("NVIDIA Tegra XUSB xHCI host-controller driver");
1327MODULE_LICENSE("GPL v2");