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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/pm_domain.h>
22#include <linux/pm_runtime.h>
23#include <linux/regulator/consumer.h>
24#include <linux/reset.h>
25#include <linux/slab.h>
26#include <soc/tegra/pmc.h>
27
28#include "xhci.h"
29
30#define TEGRA_XHCI_SS_HIGH_SPEED 120000000
31#define TEGRA_XHCI_SS_LOW_SPEED 12000000
32
33/* FPCI CFG registers */
34#define XUSB_CFG_1 0x004
35#define XUSB_IO_SPACE_EN BIT(0)
36#define XUSB_MEM_SPACE_EN BIT(1)
37#define XUSB_BUS_MASTER_EN BIT(2)
38#define XUSB_CFG_4 0x010
39#define XUSB_BASE_ADDR_SHIFT 15
40#define XUSB_BASE_ADDR_MASK 0x1ffff
41#define XUSB_CFG_ARU_C11_CSBRANGE 0x41c
42#define XUSB_CFG_CSB_BASE_ADDR 0x800
43
44/* FPCI mailbox registers */
45#define XUSB_CFG_ARU_MBOX_CMD 0x0e4
46#define MBOX_DEST_FALC BIT(27)
47#define MBOX_DEST_PME BIT(28)
48#define MBOX_DEST_SMI BIT(29)
49#define MBOX_DEST_XHCI BIT(30)
50#define MBOX_INT_EN BIT(31)
51#define XUSB_CFG_ARU_MBOX_DATA_IN 0x0e8
52#define CMD_DATA_SHIFT 0
53#define CMD_DATA_MASK 0xffffff
54#define CMD_TYPE_SHIFT 24
55#define CMD_TYPE_MASK 0xff
56#define XUSB_CFG_ARU_MBOX_DATA_OUT 0x0ec
57#define XUSB_CFG_ARU_MBOX_OWNER 0x0f0
58#define MBOX_OWNER_NONE 0
59#define MBOX_OWNER_FW 1
60#define MBOX_OWNER_SW 2
61#define XUSB_CFG_ARU_SMI_INTR 0x428
62#define MBOX_SMI_INTR_FW_HANG BIT(1)
63#define MBOX_SMI_INTR_EN BIT(3)
64
65/* IPFS registers */
66#define IPFS_XUSB_HOST_CONFIGURATION_0 0x180
67#define IPFS_EN_FPCI BIT(0)
68#define IPFS_XUSB_HOST_INTR_MASK_0 0x188
69#define IPFS_IP_INT_MASK BIT(16)
70#define IPFS_XUSB_HOST_CLKGATE_HYSTERESIS_0 0x1bc
71
72#define CSB_PAGE_SELECT_MASK 0x7fffff
73#define CSB_PAGE_SELECT_SHIFT 9
74#define CSB_PAGE_OFFSET_MASK 0x1ff
75#define CSB_PAGE_SELECT(addr) ((addr) >> (CSB_PAGE_SELECT_SHIFT) & \
76 CSB_PAGE_SELECT_MASK)
77#define CSB_PAGE_OFFSET(addr) ((addr) & CSB_PAGE_OFFSET_MASK)
78
79/* Falcon CSB registers */
80#define XUSB_FALC_CPUCTL 0x100
81#define CPUCTL_STARTCPU BIT(1)
82#define CPUCTL_STATE_HALTED BIT(4)
83#define CPUCTL_STATE_STOPPED BIT(5)
84#define XUSB_FALC_BOOTVEC 0x104
85#define XUSB_FALC_DMACTL 0x10c
86#define XUSB_FALC_IMFILLRNG1 0x154
87#define IMFILLRNG1_TAG_MASK 0xffff
88#define IMFILLRNG1_TAG_LO_SHIFT 0
89#define IMFILLRNG1_TAG_HI_SHIFT 16
90#define XUSB_FALC_IMFILLCTL 0x158
91
92/* MP CSB registers */
93#define XUSB_CSB_MP_ILOAD_ATTR 0x101a00
94#define XUSB_CSB_MP_ILOAD_BASE_LO 0x101a04
95#define XUSB_CSB_MP_ILOAD_BASE_HI 0x101a08
96#define XUSB_CSB_MP_L2IMEMOP_SIZE 0x101a10
97#define L2IMEMOP_SIZE_SRC_OFFSET_SHIFT 8
98#define L2IMEMOP_SIZE_SRC_OFFSET_MASK 0x3ff
99#define L2IMEMOP_SIZE_SRC_COUNT_SHIFT 24
100#define L2IMEMOP_SIZE_SRC_COUNT_MASK 0xff
101#define XUSB_CSB_MP_L2IMEMOP_TRIG 0x101a14
102#define L2IMEMOP_ACTION_SHIFT 24
103#define L2IMEMOP_INVALIDATE_ALL (0x40 << L2IMEMOP_ACTION_SHIFT)
104#define L2IMEMOP_LOAD_LOCKED_RESULT (0x11 << L2IMEMOP_ACTION_SHIFT)
105#define XUSB_CSB_MP_APMAP 0x10181c
106#define APMAP_BOOTPATH BIT(31)
107
108#define IMEM_BLOCK_SIZE 256
109
110struct tegra_xusb_fw_header {
111 __le32 boot_loadaddr_in_imem;
112 __le32 boot_codedfi_offset;
113 __le32 boot_codetag;
114 __le32 boot_codesize;
115 __le32 phys_memaddr;
116 __le16 reqphys_memsize;
117 __le16 alloc_phys_memsize;
118 __le32 rodata_img_offset;
119 __le32 rodata_section_start;
120 __le32 rodata_section_end;
121 __le32 main_fnaddr;
122 __le32 fwimg_cksum;
123 __le32 fwimg_created_time;
124 __le32 imem_resident_start;
125 __le32 imem_resident_end;
126 __le32 idirect_start;
127 __le32 idirect_end;
128 __le32 l2_imem_start;
129 __le32 l2_imem_end;
130 __le32 version_id;
131 u8 init_ddirect;
132 u8 reserved[3];
133 __le32 phys_addr_log_buffer;
134 __le32 total_log_entries;
135 __le32 dequeue_ptr;
136 __le32 dummy_var[2];
137 __le32 fwimg_len;
138 u8 magic[8];
139 __le32 ss_low_power_entry_timeout;
140 u8 num_hsic_port;
141 u8 padding[139]; /* Pad to 256 bytes */
142};
143
144struct tegra_xusb_phy_type {
145 const char *name;
146 unsigned int num;
147};
148
149struct tegra_xusb_soc {
150 const char *firmware;
151 const char * const *supply_names;
152 unsigned int num_supplies;
153 const struct tegra_xusb_phy_type *phy_types;
154 unsigned int num_types;
155
156 struct {
157 struct {
158 unsigned int offset;
159 unsigned int count;
160 } usb2, ulpi, hsic, usb3;
161 } ports;
162
163 bool scale_ss_clock;
164 bool has_ipfs;
165};
166
167struct tegra_xusb {
168 struct device *dev;
169 void __iomem *regs;
170 struct usb_hcd *hcd;
171
172 struct mutex lock;
173
174 int xhci_irq;
175 int mbox_irq;
176
177 void __iomem *ipfs_base;
178 void __iomem *fpci_base;
179
180 const struct tegra_xusb_soc *soc;
181
182 struct regulator_bulk_data *supplies;
183
184 struct tegra_xusb_padctl *padctl;
185
186 struct clk *host_clk;
187 struct clk *falcon_clk;
188 struct clk *ss_clk;
189 struct clk *ss_src_clk;
190 struct clk *hs_src_clk;
191 struct clk *fs_src_clk;
192 struct clk *pll_u_480m;
193 struct clk *clk_m;
194 struct clk *pll_e;
195
196 struct reset_control *host_rst;
197 struct reset_control *ss_rst;
198
199 struct device *genpd_dev_host;
200 struct device *genpd_dev_ss;
201 struct device_link *genpd_dl_host;
202 struct device_link *genpd_dl_ss;
203
204 struct phy **phys;
205 unsigned int num_phys;
206
207 /* Firmware loading related */
208 struct {
209 size_t size;
210 void *virt;
211 dma_addr_t phys;
212 } fw;
213};
214
215static struct hc_driver __read_mostly tegra_xhci_hc_driver;
216
217static inline u32 fpci_readl(struct tegra_xusb *tegra, unsigned int offset)
218{
219 return readl(tegra->fpci_base + offset);
220}
221
222static inline void fpci_writel(struct tegra_xusb *tegra, u32 value,
223 unsigned int offset)
224{
225 writel(value, tegra->fpci_base + offset);
226}
227
228static inline u32 ipfs_readl(struct tegra_xusb *tegra, unsigned int offset)
229{
230 return readl(tegra->ipfs_base + offset);
231}
232
233static inline void ipfs_writel(struct tegra_xusb *tegra, u32 value,
234 unsigned int offset)
235{
236 writel(value, tegra->ipfs_base + offset);
237}
238
239static u32 csb_readl(struct tegra_xusb *tegra, unsigned int offset)
240{
241 u32 page = CSB_PAGE_SELECT(offset);
242 u32 ofs = CSB_PAGE_OFFSET(offset);
243
244 fpci_writel(tegra, page, XUSB_CFG_ARU_C11_CSBRANGE);
245
246 return fpci_readl(tegra, XUSB_CFG_CSB_BASE_ADDR + ofs);
247}
248
249static void csb_writel(struct tegra_xusb *tegra, u32 value,
250 unsigned int offset)
251{
252 u32 page = CSB_PAGE_SELECT(offset);
253 u32 ofs = CSB_PAGE_OFFSET(offset);
254
255 fpci_writel(tegra, page, XUSB_CFG_ARU_C11_CSBRANGE);
256 fpci_writel(tegra, value, XUSB_CFG_CSB_BASE_ADDR + ofs);
257}
258
259static int tegra_xusb_set_ss_clk(struct tegra_xusb *tegra,
260 unsigned long rate)
261{
262 unsigned long new_parent_rate, old_parent_rate;
263 struct clk *clk = tegra->ss_src_clk;
264 unsigned int div;
265 int err;
266
267 if (clk_get_rate(clk) == rate)
268 return 0;
269
270 switch (rate) {
271 case TEGRA_XHCI_SS_HIGH_SPEED:
272 /*
273 * Reparent to PLLU_480M. Set divider first to avoid
274 * overclocking.
275 */
276 old_parent_rate = clk_get_rate(clk_get_parent(clk));
277 new_parent_rate = clk_get_rate(tegra->pll_u_480m);
278 div = new_parent_rate / rate;
279
280 err = clk_set_rate(clk, old_parent_rate / div);
281 if (err)
282 return err;
283
284 err = clk_set_parent(clk, tegra->pll_u_480m);
285 if (err)
286 return err;
287
288 /*
289 * The rate should already be correct, but set it again just
290 * to be sure.
291 */
292 err = clk_set_rate(clk, rate);
293 if (err)
294 return err;
295
296 break;
297
298 case TEGRA_XHCI_SS_LOW_SPEED:
299 /* Reparent to CLK_M */
300 err = clk_set_parent(clk, tegra->clk_m);
301 if (err)
302 return err;
303
304 err = clk_set_rate(clk, rate);
305 if (err)
306 return err;
307
308 break;
309
310 default:
311 dev_err(tegra->dev, "Invalid SS rate: %lu Hz\n", rate);
312 return -EINVAL;
313 }
314
315 if (clk_get_rate(clk) != rate) {
316 dev_err(tegra->dev, "SS clock doesn't match requested rate\n");
317 return -EINVAL;
318 }
319
320 return 0;
321}
322
323static unsigned long extract_field(u32 value, unsigned int start,
324 unsigned int count)
325{
326 return (value >> start) & ((1 << count) - 1);
327}
328
329/* Command requests from the firmware */
330enum tegra_xusb_mbox_cmd {
331 MBOX_CMD_MSG_ENABLED = 1,
332 MBOX_CMD_INC_FALC_CLOCK,
333 MBOX_CMD_DEC_FALC_CLOCK,
334 MBOX_CMD_INC_SSPI_CLOCK,
335 MBOX_CMD_DEC_SSPI_CLOCK,
336 MBOX_CMD_SET_BW, /* no ACK/NAK required */
337 MBOX_CMD_SET_SS_PWR_GATING,
338 MBOX_CMD_SET_SS_PWR_UNGATING,
339 MBOX_CMD_SAVE_DFE_CTLE_CTX,
340 MBOX_CMD_AIRPLANE_MODE_ENABLED, /* unused */
341 MBOX_CMD_AIRPLANE_MODE_DISABLED, /* unused */
342 MBOX_CMD_START_HSIC_IDLE,
343 MBOX_CMD_STOP_HSIC_IDLE,
344 MBOX_CMD_DBC_WAKE_STACK, /* unused */
345 MBOX_CMD_HSIC_PRETEND_CONNECT,
346 MBOX_CMD_RESET_SSPI,
347 MBOX_CMD_DISABLE_SS_LFPS_DETECTION,
348 MBOX_CMD_ENABLE_SS_LFPS_DETECTION,
349
350 MBOX_CMD_MAX,
351
352 /* Response message to above commands */
353 MBOX_CMD_ACK = 128,
354 MBOX_CMD_NAK
355};
356
357struct tegra_xusb_mbox_msg {
358 u32 cmd;
359 u32 data;
360};
361
362static inline u32 tegra_xusb_mbox_pack(const struct tegra_xusb_mbox_msg *msg)
363{
364 return (msg->cmd & CMD_TYPE_MASK) << CMD_TYPE_SHIFT |
365 (msg->data & CMD_DATA_MASK) << CMD_DATA_SHIFT;
366}
367static inline void tegra_xusb_mbox_unpack(struct tegra_xusb_mbox_msg *msg,
368 u32 value)
369{
370 msg->cmd = (value >> CMD_TYPE_SHIFT) & CMD_TYPE_MASK;
371 msg->data = (value >> CMD_DATA_SHIFT) & CMD_DATA_MASK;
372}
373
374static bool tegra_xusb_mbox_cmd_requires_ack(enum tegra_xusb_mbox_cmd cmd)
375{
376 switch (cmd) {
377 case MBOX_CMD_SET_BW:
378 case MBOX_CMD_ACK:
379 case MBOX_CMD_NAK:
380 return false;
381
382 default:
383 return true;
384 }
385}
386
387static int tegra_xusb_mbox_send(struct tegra_xusb *tegra,
388 const struct tegra_xusb_mbox_msg *msg)
389{
390 bool wait_for_idle = false;
391 u32 value;
392
393 /*
394 * Acquire the mailbox. The firmware still owns the mailbox for
395 * ACK/NAK messages.
396 */
397 if (!(msg->cmd == MBOX_CMD_ACK || msg->cmd == MBOX_CMD_NAK)) {
398 value = fpci_readl(tegra, XUSB_CFG_ARU_MBOX_OWNER);
399 if (value != MBOX_OWNER_NONE) {
400 dev_err(tegra->dev, "mailbox is busy\n");
401 return -EBUSY;
402 }
403
404 fpci_writel(tegra, MBOX_OWNER_SW, XUSB_CFG_ARU_MBOX_OWNER);
405
406 value = fpci_readl(tegra, XUSB_CFG_ARU_MBOX_OWNER);
407 if (value != MBOX_OWNER_SW) {
408 dev_err(tegra->dev, "failed to acquire mailbox\n");
409 return -EBUSY;
410 }
411
412 wait_for_idle = true;
413 }
414
415 value = tegra_xusb_mbox_pack(msg);
416 fpci_writel(tegra, value, XUSB_CFG_ARU_MBOX_DATA_IN);
417
418 value = fpci_readl(tegra, XUSB_CFG_ARU_MBOX_CMD);
419 value |= MBOX_INT_EN | MBOX_DEST_FALC;
420 fpci_writel(tegra, value, XUSB_CFG_ARU_MBOX_CMD);
421
422 if (wait_for_idle) {
423 unsigned long timeout = jiffies + msecs_to_jiffies(250);
424
425 while (time_before(jiffies, timeout)) {
426 value = fpci_readl(tegra, XUSB_CFG_ARU_MBOX_OWNER);
427 if (value == MBOX_OWNER_NONE)
428 break;
429
430 usleep_range(10, 20);
431 }
432
433 if (time_after(jiffies, timeout))
434 value = fpci_readl(tegra, XUSB_CFG_ARU_MBOX_OWNER);
435
436 if (value != MBOX_OWNER_NONE)
437 return -ETIMEDOUT;
438 }
439
440 return 0;
441}
442
443static irqreturn_t tegra_xusb_mbox_irq(int irq, void *data)
444{
445 struct tegra_xusb *tegra = data;
446 u32 value;
447
448 /* clear mailbox interrupts */
449 value = fpci_readl(tegra, XUSB_CFG_ARU_SMI_INTR);
450 fpci_writel(tegra, value, XUSB_CFG_ARU_SMI_INTR);
451
452 if (value & MBOX_SMI_INTR_FW_HANG)
453 dev_err(tegra->dev, "controller firmware hang\n");
454
455 return IRQ_WAKE_THREAD;
456}
457
458static void tegra_xusb_mbox_handle(struct tegra_xusb *tegra,
459 const struct tegra_xusb_mbox_msg *msg)
460{
461 struct tegra_xusb_padctl *padctl = tegra->padctl;
462 const struct tegra_xusb_soc *soc = tegra->soc;
463 struct device *dev = tegra->dev;
464 struct tegra_xusb_mbox_msg rsp;
465 unsigned long mask;
466 unsigned int port;
467 bool idle, enable;
468 int err = 0;
469
470 memset(&rsp, 0, sizeof(rsp));
471
472 switch (msg->cmd) {
473 case MBOX_CMD_INC_FALC_CLOCK:
474 case MBOX_CMD_DEC_FALC_CLOCK:
475 rsp.data = clk_get_rate(tegra->falcon_clk) / 1000;
476 if (rsp.data != msg->data)
477 rsp.cmd = MBOX_CMD_NAK;
478 else
479 rsp.cmd = MBOX_CMD_ACK;
480
481 break;
482
483 case MBOX_CMD_INC_SSPI_CLOCK:
484 case MBOX_CMD_DEC_SSPI_CLOCK:
485 if (tegra->soc->scale_ss_clock) {
486 err = tegra_xusb_set_ss_clk(tegra, msg->data * 1000);
487 if (err < 0)
488 rsp.cmd = MBOX_CMD_NAK;
489 else
490 rsp.cmd = MBOX_CMD_ACK;
491
492 rsp.data = clk_get_rate(tegra->ss_src_clk) / 1000;
493 } else {
494 rsp.cmd = MBOX_CMD_ACK;
495 rsp.data = msg->data;
496 }
497
498 break;
499
500 case MBOX_CMD_SET_BW:
501 /*
502 * TODO: Request bandwidth once EMC scaling is supported.
503 * Ignore for now since ACK/NAK is not required for SET_BW
504 * messages.
505 */
506 break;
507
508 case MBOX_CMD_SAVE_DFE_CTLE_CTX:
509 err = tegra_xusb_padctl_usb3_save_context(padctl, msg->data);
510 if (err < 0) {
511 dev_err(dev, "failed to save context for USB3#%u: %d\n",
512 msg->data, err);
513 rsp.cmd = MBOX_CMD_NAK;
514 } else {
515 rsp.cmd = MBOX_CMD_ACK;
516 }
517
518 rsp.data = msg->data;
519 break;
520
521 case MBOX_CMD_START_HSIC_IDLE:
522 case MBOX_CMD_STOP_HSIC_IDLE:
523 if (msg->cmd == MBOX_CMD_STOP_HSIC_IDLE)
524 idle = false;
525 else
526 idle = true;
527
528 mask = extract_field(msg->data, 1 + soc->ports.hsic.offset,
529 soc->ports.hsic.count);
530
531 for_each_set_bit(port, &mask, 32) {
532 err = tegra_xusb_padctl_hsic_set_idle(padctl, port,
533 idle);
534 if (err < 0)
535 break;
536 }
537
538 if (err < 0) {
539 dev_err(dev, "failed to set HSIC#%u %s: %d\n", port,
540 idle ? "idle" : "busy", err);
541 rsp.cmd = MBOX_CMD_NAK;
542 } else {
543 rsp.cmd = MBOX_CMD_ACK;
544 }
545
546 rsp.data = msg->data;
547 break;
548
549 case MBOX_CMD_DISABLE_SS_LFPS_DETECTION:
550 case MBOX_CMD_ENABLE_SS_LFPS_DETECTION:
551 if (msg->cmd == MBOX_CMD_DISABLE_SS_LFPS_DETECTION)
552 enable = false;
553 else
554 enable = true;
555
556 mask = extract_field(msg->data, 1 + soc->ports.usb3.offset,
557 soc->ports.usb3.count);
558
559 for_each_set_bit(port, &mask, soc->ports.usb3.count) {
560 err = tegra_xusb_padctl_usb3_set_lfps_detect(padctl,
561 port,
562 enable);
563 if (err < 0)
564 break;
565 }
566
567 if (err < 0) {
568 dev_err(dev,
569 "failed to %s LFPS detection on USB3#%u: %d\n",
570 enable ? "enable" : "disable", port, err);
571 rsp.cmd = MBOX_CMD_NAK;
572 } else {
573 rsp.cmd = MBOX_CMD_ACK;
574 }
575
576 rsp.data = msg->data;
577 break;
578
579 default:
580 dev_warn(dev, "unknown message: %#x\n", msg->cmd);
581 break;
582 }
583
584 if (rsp.cmd) {
585 const char *cmd = (rsp.cmd == MBOX_CMD_ACK) ? "ACK" : "NAK";
586
587 err = tegra_xusb_mbox_send(tegra, &rsp);
588 if (err < 0)
589 dev_err(dev, "failed to send %s: %d\n", cmd, err);
590 }
591}
592
593static irqreturn_t tegra_xusb_mbox_thread(int irq, void *data)
594{
595 struct tegra_xusb *tegra = data;
596 struct tegra_xusb_mbox_msg msg;
597 u32 value;
598
599 mutex_lock(&tegra->lock);
600
601 value = fpci_readl(tegra, XUSB_CFG_ARU_MBOX_DATA_OUT);
602 tegra_xusb_mbox_unpack(&msg, value);
603
604 value = fpci_readl(tegra, XUSB_CFG_ARU_MBOX_CMD);
605 value &= ~MBOX_DEST_SMI;
606 fpci_writel(tegra, value, XUSB_CFG_ARU_MBOX_CMD);
607
608 /* clear mailbox owner if no ACK/NAK is required */
609 if (!tegra_xusb_mbox_cmd_requires_ack(msg.cmd))
610 fpci_writel(tegra, MBOX_OWNER_NONE, XUSB_CFG_ARU_MBOX_OWNER);
611
612 tegra_xusb_mbox_handle(tegra, &msg);
613
614 mutex_unlock(&tegra->lock);
615 return IRQ_HANDLED;
616}
617
618static void tegra_xusb_config(struct tegra_xusb *tegra,
619 struct resource *regs)
620{
621 u32 value;
622
623 if (tegra->soc->has_ipfs) {
624 value = ipfs_readl(tegra, IPFS_XUSB_HOST_CONFIGURATION_0);
625 value |= IPFS_EN_FPCI;
626 ipfs_writel(tegra, value, IPFS_XUSB_HOST_CONFIGURATION_0);
627
628 usleep_range(10, 20);
629 }
630
631 /* Program BAR0 space */
632 value = fpci_readl(tegra, XUSB_CFG_4);
633 value &= ~(XUSB_BASE_ADDR_MASK << XUSB_BASE_ADDR_SHIFT);
634 value |= regs->start & (XUSB_BASE_ADDR_MASK << XUSB_BASE_ADDR_SHIFT);
635 fpci_writel(tegra, value, XUSB_CFG_4);
636
637 usleep_range(100, 200);
638
639 /* Enable bus master */
640 value = fpci_readl(tegra, XUSB_CFG_1);
641 value |= XUSB_IO_SPACE_EN | XUSB_MEM_SPACE_EN | XUSB_BUS_MASTER_EN;
642 fpci_writel(tegra, value, XUSB_CFG_1);
643
644 if (tegra->soc->has_ipfs) {
645 /* Enable interrupt assertion */
646 value = ipfs_readl(tegra, IPFS_XUSB_HOST_INTR_MASK_0);
647 value |= IPFS_IP_INT_MASK;
648 ipfs_writel(tegra, value, IPFS_XUSB_HOST_INTR_MASK_0);
649
650 /* Set hysteresis */
651 ipfs_writel(tegra, 0x80, IPFS_XUSB_HOST_CLKGATE_HYSTERESIS_0);
652 }
653}
654
655static int tegra_xusb_clk_enable(struct tegra_xusb *tegra)
656{
657 int err;
658
659 err = clk_prepare_enable(tegra->pll_e);
660 if (err < 0)
661 return err;
662
663 err = clk_prepare_enable(tegra->host_clk);
664 if (err < 0)
665 goto disable_plle;
666
667 err = clk_prepare_enable(tegra->ss_clk);
668 if (err < 0)
669 goto disable_host;
670
671 err = clk_prepare_enable(tegra->falcon_clk);
672 if (err < 0)
673 goto disable_ss;
674
675 err = clk_prepare_enable(tegra->fs_src_clk);
676 if (err < 0)
677 goto disable_falc;
678
679 err = clk_prepare_enable(tegra->hs_src_clk);
680 if (err < 0)
681 goto disable_fs_src;
682
683 if (tegra->soc->scale_ss_clock) {
684 err = tegra_xusb_set_ss_clk(tegra, TEGRA_XHCI_SS_HIGH_SPEED);
685 if (err < 0)
686 goto disable_hs_src;
687 }
688
689 return 0;
690
691disable_hs_src:
692 clk_disable_unprepare(tegra->hs_src_clk);
693disable_fs_src:
694 clk_disable_unprepare(tegra->fs_src_clk);
695disable_falc:
696 clk_disable_unprepare(tegra->falcon_clk);
697disable_ss:
698 clk_disable_unprepare(tegra->ss_clk);
699disable_host:
700 clk_disable_unprepare(tegra->host_clk);
701disable_plle:
702 clk_disable_unprepare(tegra->pll_e);
703 return err;
704}
705
706static void tegra_xusb_clk_disable(struct tegra_xusb *tegra)
707{
708 clk_disable_unprepare(tegra->pll_e);
709 clk_disable_unprepare(tegra->host_clk);
710 clk_disable_unprepare(tegra->ss_clk);
711 clk_disable_unprepare(tegra->falcon_clk);
712 clk_disable_unprepare(tegra->fs_src_clk);
713 clk_disable_unprepare(tegra->hs_src_clk);
714}
715
716static int tegra_xusb_phy_enable(struct tegra_xusb *tegra)
717{
718 unsigned int i;
719 int err;
720
721 for (i = 0; i < tegra->num_phys; i++) {
722 err = phy_init(tegra->phys[i]);
723 if (err)
724 goto disable_phy;
725
726 err = phy_power_on(tegra->phys[i]);
727 if (err) {
728 phy_exit(tegra->phys[i]);
729 goto disable_phy;
730 }
731 }
732
733 return 0;
734
735disable_phy:
736 while (i--) {
737 phy_power_off(tegra->phys[i]);
738 phy_exit(tegra->phys[i]);
739 }
740
741 return err;
742}
743
744static void tegra_xusb_phy_disable(struct tegra_xusb *tegra)
745{
746 unsigned int i;
747
748 for (i = 0; i < tegra->num_phys; i++) {
749 phy_power_off(tegra->phys[i]);
750 phy_exit(tegra->phys[i]);
751 }
752}
753
754static int tegra_xusb_runtime_suspend(struct device *dev)
755{
756 struct tegra_xusb *tegra = dev_get_drvdata(dev);
757
758 tegra_xusb_phy_disable(tegra);
759 regulator_bulk_disable(tegra->soc->num_supplies, tegra->supplies);
760 tegra_xusb_clk_disable(tegra);
761
762 return 0;
763}
764
765static int tegra_xusb_runtime_resume(struct device *dev)
766{
767 struct tegra_xusb *tegra = dev_get_drvdata(dev);
768 int err;
769
770 err = tegra_xusb_clk_enable(tegra);
771 if (err) {
772 dev_err(dev, "failed to enable clocks: %d\n", err);
773 return err;
774 }
775
776 err = regulator_bulk_enable(tegra->soc->num_supplies, tegra->supplies);
777 if (err) {
778 dev_err(dev, "failed to enable regulators: %d\n", err);
779 goto disable_clk;
780 }
781
782 err = tegra_xusb_phy_enable(tegra);
783 if (err < 0) {
784 dev_err(dev, "failed to enable PHYs: %d\n", err);
785 goto disable_regulator;
786 }
787
788 return 0;
789
790disable_regulator:
791 regulator_bulk_disable(tegra->soc->num_supplies, tegra->supplies);
792disable_clk:
793 tegra_xusb_clk_disable(tegra);
794 return err;
795}
796
797static int tegra_xusb_load_firmware(struct tegra_xusb *tegra)
798{
799 unsigned int code_tag_blocks, code_size_blocks, code_blocks;
800 struct tegra_xusb_fw_header *header;
801 struct device *dev = tegra->dev;
802 const struct firmware *fw;
803 unsigned long timeout;
804 time64_t timestamp;
805 struct tm time;
806 u64 address;
807 u32 value;
808 int err;
809
810 err = request_firmware(&fw, tegra->soc->firmware, tegra->dev);
811 if (err < 0) {
812 dev_err(tegra->dev, "failed to request firmware: %d\n", err);
813 return err;
814 }
815
816 /* Load Falcon controller with its firmware. */
817 header = (struct tegra_xusb_fw_header *)fw->data;
818 tegra->fw.size = le32_to_cpu(header->fwimg_len);
819
820 tegra->fw.virt = dma_alloc_coherent(tegra->dev, tegra->fw.size,
821 &tegra->fw.phys, GFP_KERNEL);
822 if (!tegra->fw.virt) {
823 dev_err(tegra->dev, "failed to allocate memory for firmware\n");
824 release_firmware(fw);
825 return -ENOMEM;
826 }
827
828 header = (struct tegra_xusb_fw_header *)tegra->fw.virt;
829 memcpy(tegra->fw.virt, fw->data, tegra->fw.size);
830 release_firmware(fw);
831
832 if (csb_readl(tegra, XUSB_CSB_MP_ILOAD_BASE_LO) != 0) {
833 dev_info(dev, "Firmware already loaded, Falcon state %#x\n",
834 csb_readl(tegra, XUSB_FALC_CPUCTL));
835 return 0;
836 }
837
838 /* Program the size of DFI into ILOAD_ATTR. */
839 csb_writel(tegra, tegra->fw.size, XUSB_CSB_MP_ILOAD_ATTR);
840
841 /*
842 * Boot code of the firmware reads the ILOAD_BASE registers
843 * to get to the start of the DFI in system memory.
844 */
845 address = tegra->fw.phys + sizeof(*header);
846 csb_writel(tegra, address >> 32, XUSB_CSB_MP_ILOAD_BASE_HI);
847 csb_writel(tegra, address, XUSB_CSB_MP_ILOAD_BASE_LO);
848
849 /* Set BOOTPATH to 1 in APMAP. */
850 csb_writel(tegra, APMAP_BOOTPATH, XUSB_CSB_MP_APMAP);
851
852 /* Invalidate L2IMEM. */
853 csb_writel(tegra, L2IMEMOP_INVALIDATE_ALL, XUSB_CSB_MP_L2IMEMOP_TRIG);
854
855 /*
856 * Initiate fetch of bootcode from system memory into L2IMEM.
857 * Program bootcode location and size in system memory.
858 */
859 code_tag_blocks = DIV_ROUND_UP(le32_to_cpu(header->boot_codetag),
860 IMEM_BLOCK_SIZE);
861 code_size_blocks = DIV_ROUND_UP(le32_to_cpu(header->boot_codesize),
862 IMEM_BLOCK_SIZE);
863 code_blocks = code_tag_blocks + code_size_blocks;
864
865 value = ((code_tag_blocks & L2IMEMOP_SIZE_SRC_OFFSET_MASK) <<
866 L2IMEMOP_SIZE_SRC_OFFSET_SHIFT) |
867 ((code_size_blocks & L2IMEMOP_SIZE_SRC_COUNT_MASK) <<
868 L2IMEMOP_SIZE_SRC_COUNT_SHIFT);
869 csb_writel(tegra, value, XUSB_CSB_MP_L2IMEMOP_SIZE);
870
871 /* Trigger L2IMEM load operation. */
872 csb_writel(tegra, L2IMEMOP_LOAD_LOCKED_RESULT,
873 XUSB_CSB_MP_L2IMEMOP_TRIG);
874
875 /* Setup Falcon auto-fill. */
876 csb_writel(tegra, code_size_blocks, XUSB_FALC_IMFILLCTL);
877
878 value = ((code_tag_blocks & IMFILLRNG1_TAG_MASK) <<
879 IMFILLRNG1_TAG_LO_SHIFT) |
880 ((code_blocks & IMFILLRNG1_TAG_MASK) <<
881 IMFILLRNG1_TAG_HI_SHIFT);
882 csb_writel(tegra, value, XUSB_FALC_IMFILLRNG1);
883
884 csb_writel(tegra, 0, XUSB_FALC_DMACTL);
885
886 msleep(50);
887
888 csb_writel(tegra, le32_to_cpu(header->boot_codetag),
889 XUSB_FALC_BOOTVEC);
890
891 /* Boot Falcon CPU and wait for it to enter the STOPPED (idle) state. */
892 timeout = jiffies + msecs_to_jiffies(5);
893
894 csb_writel(tegra, CPUCTL_STARTCPU, XUSB_FALC_CPUCTL);
895
896 while (time_before(jiffies, timeout)) {
897 if (csb_readl(tegra, XUSB_FALC_CPUCTL) == CPUCTL_STATE_STOPPED)
898 break;
899
900 usleep_range(100, 200);
901 }
902
903 if (csb_readl(tegra, XUSB_FALC_CPUCTL) != CPUCTL_STATE_STOPPED) {
904 dev_err(dev, "Falcon failed to start, state: %#x\n",
905 csb_readl(tegra, XUSB_FALC_CPUCTL));
906 return -EIO;
907 }
908
909 timestamp = le32_to_cpu(header->fwimg_created_time);
910 time64_to_tm(timestamp, 0, &time);
911
912 dev_info(dev, "Firmware timestamp: %ld-%02d-%02d %02d:%02d:%02d UTC\n",
913 time.tm_year + 1900, time.tm_mon + 1, time.tm_mday,
914 time.tm_hour, time.tm_min, time.tm_sec);
915
916 return 0;
917}
918
919static void tegra_xusb_powerdomain_remove(struct device *dev,
920 struct tegra_xusb *tegra)
921{
922 if (tegra->genpd_dl_ss)
923 device_link_del(tegra->genpd_dl_ss);
924 if (tegra->genpd_dl_host)
925 device_link_del(tegra->genpd_dl_host);
926 if (!IS_ERR_OR_NULL(tegra->genpd_dev_ss))
927 dev_pm_domain_detach(tegra->genpd_dev_ss, true);
928 if (!IS_ERR_OR_NULL(tegra->genpd_dev_host))
929 dev_pm_domain_detach(tegra->genpd_dev_host, true);
930}
931
932static int tegra_xusb_powerdomain_init(struct device *dev,
933 struct tegra_xusb *tegra)
934{
935 int err;
936
937 tegra->genpd_dev_host = dev_pm_domain_attach_by_name(dev, "xusb_host");
938 if (IS_ERR(tegra->genpd_dev_host)) {
939 err = PTR_ERR(tegra->genpd_dev_host);
940 dev_err(dev, "failed to get host pm-domain: %d\n", err);
941 return err;
942 }
943
944 tegra->genpd_dev_ss = dev_pm_domain_attach_by_name(dev, "xusb_ss");
945 if (IS_ERR(tegra->genpd_dev_ss)) {
946 err = PTR_ERR(tegra->genpd_dev_ss);
947 dev_err(dev, "failed to get superspeed pm-domain: %d\n", err);
948 return err;
949 }
950
951 tegra->genpd_dl_host = device_link_add(dev, tegra->genpd_dev_host,
952 DL_FLAG_PM_RUNTIME |
953 DL_FLAG_STATELESS);
954 if (!tegra->genpd_dl_host) {
955 dev_err(dev, "adding host device link failed!\n");
956 return -ENODEV;
957 }
958
959 tegra->genpd_dl_ss = device_link_add(dev, tegra->genpd_dev_ss,
960 DL_FLAG_PM_RUNTIME |
961 DL_FLAG_STATELESS);
962 if (!tegra->genpd_dl_ss) {
963 dev_err(dev, "adding superspeed device link failed!\n");
964 return -ENODEV;
965 }
966
967 return 0;
968}
969
970static int tegra_xusb_probe(struct platform_device *pdev)
971{
972 struct tegra_xusb_mbox_msg msg;
973 struct resource *res, *regs;
974 struct tegra_xusb *tegra;
975 struct xhci_hcd *xhci;
976 unsigned int i, j, k;
977 struct phy *phy;
978 int err;
979
980 BUILD_BUG_ON(sizeof(struct tegra_xusb_fw_header) != 256);
981
982 tegra = devm_kzalloc(&pdev->dev, sizeof(*tegra), GFP_KERNEL);
983 if (!tegra)
984 return -ENOMEM;
985
986 tegra->soc = of_device_get_match_data(&pdev->dev);
987 mutex_init(&tegra->lock);
988 tegra->dev = &pdev->dev;
989
990 regs = platform_get_resource(pdev, IORESOURCE_MEM, 0);
991 tegra->regs = devm_ioremap_resource(&pdev->dev, regs);
992 if (IS_ERR(tegra->regs))
993 return PTR_ERR(tegra->regs);
994
995 res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
996 tegra->fpci_base = devm_ioremap_resource(&pdev->dev, res);
997 if (IS_ERR(tegra->fpci_base))
998 return PTR_ERR(tegra->fpci_base);
999
1000 if (tegra->soc->has_ipfs) {
1001 res = platform_get_resource(pdev, IORESOURCE_MEM, 2);
1002 tegra->ipfs_base = devm_ioremap_resource(&pdev->dev, res);
1003 if (IS_ERR(tegra->ipfs_base))
1004 return PTR_ERR(tegra->ipfs_base);
1005 }
1006
1007 tegra->xhci_irq = platform_get_irq(pdev, 0);
1008 if (tegra->xhci_irq < 0)
1009 return tegra->xhci_irq;
1010
1011 tegra->mbox_irq = platform_get_irq(pdev, 1);
1012 if (tegra->mbox_irq < 0)
1013 return tegra->mbox_irq;
1014
1015 tegra->padctl = tegra_xusb_padctl_get(&pdev->dev);
1016 if (IS_ERR(tegra->padctl))
1017 return PTR_ERR(tegra->padctl);
1018
1019 tegra->host_clk = devm_clk_get(&pdev->dev, "xusb_host");
1020 if (IS_ERR(tegra->host_clk)) {
1021 err = PTR_ERR(tegra->host_clk);
1022 dev_err(&pdev->dev, "failed to get xusb_host: %d\n", err);
1023 goto put_padctl;
1024 }
1025
1026 tegra->falcon_clk = devm_clk_get(&pdev->dev, "xusb_falcon_src");
1027 if (IS_ERR(tegra->falcon_clk)) {
1028 err = PTR_ERR(tegra->falcon_clk);
1029 dev_err(&pdev->dev, "failed to get xusb_falcon_src: %d\n", err);
1030 goto put_padctl;
1031 }
1032
1033 tegra->ss_clk = devm_clk_get(&pdev->dev, "xusb_ss");
1034 if (IS_ERR(tegra->ss_clk)) {
1035 err = PTR_ERR(tegra->ss_clk);
1036 dev_err(&pdev->dev, "failed to get xusb_ss: %d\n", err);
1037 goto put_padctl;
1038 }
1039
1040 tegra->ss_src_clk = devm_clk_get(&pdev->dev, "xusb_ss_src");
1041 if (IS_ERR(tegra->ss_src_clk)) {
1042 err = PTR_ERR(tegra->ss_src_clk);
1043 dev_err(&pdev->dev, "failed to get xusb_ss_src: %d\n", err);
1044 goto put_padctl;
1045 }
1046
1047 tegra->hs_src_clk = devm_clk_get(&pdev->dev, "xusb_hs_src");
1048 if (IS_ERR(tegra->hs_src_clk)) {
1049 err = PTR_ERR(tegra->hs_src_clk);
1050 dev_err(&pdev->dev, "failed to get xusb_hs_src: %d\n", err);
1051 goto put_padctl;
1052 }
1053
1054 tegra->fs_src_clk = devm_clk_get(&pdev->dev, "xusb_fs_src");
1055 if (IS_ERR(tegra->fs_src_clk)) {
1056 err = PTR_ERR(tegra->fs_src_clk);
1057 dev_err(&pdev->dev, "failed to get xusb_fs_src: %d\n", err);
1058 goto put_padctl;
1059 }
1060
1061 tegra->pll_u_480m = devm_clk_get(&pdev->dev, "pll_u_480m");
1062 if (IS_ERR(tegra->pll_u_480m)) {
1063 err = PTR_ERR(tegra->pll_u_480m);
1064 dev_err(&pdev->dev, "failed to get pll_u_480m: %d\n", err);
1065 goto put_padctl;
1066 }
1067
1068 tegra->clk_m = devm_clk_get(&pdev->dev, "clk_m");
1069 if (IS_ERR(tegra->clk_m)) {
1070 err = PTR_ERR(tegra->clk_m);
1071 dev_err(&pdev->dev, "failed to get clk_m: %d\n", err);
1072 goto put_padctl;
1073 }
1074
1075 tegra->pll_e = devm_clk_get(&pdev->dev, "pll_e");
1076 if (IS_ERR(tegra->pll_e)) {
1077 err = PTR_ERR(tegra->pll_e);
1078 dev_err(&pdev->dev, "failed to get pll_e: %d\n", err);
1079 goto put_padctl;
1080 }
1081
1082 if (!of_property_read_bool(pdev->dev.of_node, "power-domains")) {
1083 tegra->host_rst = devm_reset_control_get(&pdev->dev,
1084 "xusb_host");
1085 if (IS_ERR(tegra->host_rst)) {
1086 err = PTR_ERR(tegra->host_rst);
1087 dev_err(&pdev->dev,
1088 "failed to get xusb_host reset: %d\n", err);
1089 goto put_padctl;
1090 }
1091
1092 tegra->ss_rst = devm_reset_control_get(&pdev->dev, "xusb_ss");
1093 if (IS_ERR(tegra->ss_rst)) {
1094 err = PTR_ERR(tegra->ss_rst);
1095 dev_err(&pdev->dev, "failed to get xusb_ss reset: %d\n",
1096 err);
1097 goto put_padctl;
1098 }
1099
1100 err = tegra_powergate_sequence_power_up(TEGRA_POWERGATE_XUSBA,
1101 tegra->ss_clk,
1102 tegra->ss_rst);
1103 if (err) {
1104 dev_err(&pdev->dev,
1105 "failed to enable XUSBA domain: %d\n", err);
1106 goto put_padctl;
1107 }
1108
1109 err = tegra_powergate_sequence_power_up(TEGRA_POWERGATE_XUSBC,
1110 tegra->host_clk,
1111 tegra->host_rst);
1112 if (err) {
1113 tegra_powergate_power_off(TEGRA_POWERGATE_XUSBA);
1114 dev_err(&pdev->dev,
1115 "failed to enable XUSBC domain: %d\n", err);
1116 goto put_padctl;
1117 }
1118 } else {
1119 err = tegra_xusb_powerdomain_init(&pdev->dev, tegra);
1120 if (err)
1121 goto put_powerdomains;
1122 }
1123
1124 tegra->supplies = devm_kcalloc(&pdev->dev, tegra->soc->num_supplies,
1125 sizeof(*tegra->supplies), GFP_KERNEL);
1126 if (!tegra->supplies) {
1127 err = -ENOMEM;
1128 goto put_powerdomains;
1129 }
1130
1131 for (i = 0; i < tegra->soc->num_supplies; i++)
1132 tegra->supplies[i].supply = tegra->soc->supply_names[i];
1133
1134 err = devm_regulator_bulk_get(&pdev->dev, tegra->soc->num_supplies,
1135 tegra->supplies);
1136 if (err) {
1137 dev_err(&pdev->dev, "failed to get regulators: %d\n", err);
1138 goto put_powerdomains;
1139 }
1140
1141 for (i = 0; i < tegra->soc->num_types; i++)
1142 tegra->num_phys += tegra->soc->phy_types[i].num;
1143
1144 tegra->phys = devm_kcalloc(&pdev->dev, tegra->num_phys,
1145 sizeof(*tegra->phys), GFP_KERNEL);
1146 if (!tegra->phys) {
1147 err = -ENOMEM;
1148 goto put_powerdomains;
1149 }
1150
1151 for (i = 0, k = 0; i < tegra->soc->num_types; i++) {
1152 char prop[8];
1153
1154 for (j = 0; j < tegra->soc->phy_types[i].num; j++) {
1155 snprintf(prop, sizeof(prop), "%s-%d",
1156 tegra->soc->phy_types[i].name, j);
1157
1158 phy = devm_phy_optional_get(&pdev->dev, prop);
1159 if (IS_ERR(phy)) {
1160 dev_err(&pdev->dev,
1161 "failed to get PHY %s: %ld\n", prop,
1162 PTR_ERR(phy));
1163 err = PTR_ERR(phy);
1164 goto put_powerdomains;
1165 }
1166
1167 tegra->phys[k++] = phy;
1168 }
1169 }
1170
1171 tegra->hcd = usb_create_hcd(&tegra_xhci_hc_driver, &pdev->dev,
1172 dev_name(&pdev->dev));
1173 if (!tegra->hcd) {
1174 err = -ENOMEM;
1175 goto put_powerdomains;
1176 }
1177
1178 /*
1179 * This must happen after usb_create_hcd(), because usb_create_hcd()
1180 * will overwrite the drvdata of the device with the hcd it creates.
1181 */
1182 platform_set_drvdata(pdev, tegra);
1183
1184 pm_runtime_enable(&pdev->dev);
1185 if (pm_runtime_enabled(&pdev->dev))
1186 err = pm_runtime_get_sync(&pdev->dev);
1187 else
1188 err = tegra_xusb_runtime_resume(&pdev->dev);
1189
1190 if (err < 0) {
1191 dev_err(&pdev->dev, "failed to enable device: %d\n", err);
1192 goto disable_rpm;
1193 }
1194
1195 tegra_xusb_config(tegra, regs);
1196
1197 /*
1198 * The XUSB Falcon microcontroller can only address 40 bits, so set
1199 * the DMA mask accordingly.
1200 */
1201 err = dma_set_mask_and_coherent(tegra->dev, DMA_BIT_MASK(40));
1202 if (err < 0) {
1203 dev_err(&pdev->dev, "failed to set DMA mask: %d\n", err);
1204 goto put_rpm;
1205 }
1206
1207 err = tegra_xusb_load_firmware(tegra);
1208 if (err < 0) {
1209 dev_err(&pdev->dev, "failed to load firmware: %d\n", err);
1210 goto put_rpm;
1211 }
1212
1213 tegra->hcd->regs = tegra->regs;
1214 tegra->hcd->rsrc_start = regs->start;
1215 tegra->hcd->rsrc_len = resource_size(regs);
1216
1217 err = usb_add_hcd(tegra->hcd, tegra->xhci_irq, IRQF_SHARED);
1218 if (err < 0) {
1219 dev_err(&pdev->dev, "failed to add USB HCD: %d\n", err);
1220 goto put_rpm;
1221 }
1222
1223 device_wakeup_enable(tegra->hcd->self.controller);
1224
1225 xhci = hcd_to_xhci(tegra->hcd);
1226
1227 xhci->shared_hcd = usb_create_shared_hcd(&tegra_xhci_hc_driver,
1228 &pdev->dev,
1229 dev_name(&pdev->dev),
1230 tegra->hcd);
1231 if (!xhci->shared_hcd) {
1232 dev_err(&pdev->dev, "failed to create shared HCD\n");
1233 err = -ENOMEM;
1234 goto remove_usb2;
1235 }
1236
1237 err = usb_add_hcd(xhci->shared_hcd, tegra->xhci_irq, IRQF_SHARED);
1238 if (err < 0) {
1239 dev_err(&pdev->dev, "failed to add shared HCD: %d\n", err);
1240 goto put_usb3;
1241 }
1242
1243 mutex_lock(&tegra->lock);
1244
1245 /* Enable firmware messages from controller. */
1246 msg.cmd = MBOX_CMD_MSG_ENABLED;
1247 msg.data = 0;
1248
1249 err = tegra_xusb_mbox_send(tegra, &msg);
1250 if (err < 0) {
1251 dev_err(&pdev->dev, "failed to enable messages: %d\n", err);
1252 mutex_unlock(&tegra->lock);
1253 goto remove_usb3;
1254 }
1255
1256 mutex_unlock(&tegra->lock);
1257
1258 err = devm_request_threaded_irq(&pdev->dev, tegra->mbox_irq,
1259 tegra_xusb_mbox_irq,
1260 tegra_xusb_mbox_thread, 0,
1261 dev_name(&pdev->dev), tegra);
1262 if (err < 0) {
1263 dev_err(&pdev->dev, "failed to request IRQ: %d\n", err);
1264 goto remove_usb3;
1265 }
1266
1267 return 0;
1268
1269remove_usb3:
1270 usb_remove_hcd(xhci->shared_hcd);
1271put_usb3:
1272 usb_put_hcd(xhci->shared_hcd);
1273remove_usb2:
1274 usb_remove_hcd(tegra->hcd);
1275put_rpm:
1276 if (!pm_runtime_status_suspended(&pdev->dev))
1277 tegra_xusb_runtime_suspend(&pdev->dev);
1278disable_rpm:
1279 pm_runtime_disable(&pdev->dev);
1280 usb_put_hcd(tegra->hcd);
1281put_powerdomains:
1282 if (!of_property_read_bool(pdev->dev.of_node, "power-domains")) {
1283 tegra_powergate_power_off(TEGRA_POWERGATE_XUSBC);
1284 tegra_powergate_power_off(TEGRA_POWERGATE_XUSBA);
1285 } else {
1286 tegra_xusb_powerdomain_remove(&pdev->dev, tegra);
1287 }
1288put_padctl:
1289 tegra_xusb_padctl_put(tegra->padctl);
1290 return err;
1291}
1292
1293static int tegra_xusb_remove(struct platform_device *pdev)
1294{
1295 struct tegra_xusb *tegra = platform_get_drvdata(pdev);
1296 struct xhci_hcd *xhci = hcd_to_xhci(tegra->hcd);
1297
1298 usb_remove_hcd(xhci->shared_hcd);
1299 usb_put_hcd(xhci->shared_hcd);
1300 xhci->shared_hcd = NULL;
1301 usb_remove_hcd(tegra->hcd);
1302 usb_put_hcd(tegra->hcd);
1303
1304 dma_free_coherent(&pdev->dev, tegra->fw.size, tegra->fw.virt,
1305 tegra->fw.phys);
1306
1307 pm_runtime_put_sync(&pdev->dev);
1308 pm_runtime_disable(&pdev->dev);
1309
1310 if (!of_property_read_bool(pdev->dev.of_node, "power-domains")) {
1311 tegra_powergate_power_off(TEGRA_POWERGATE_XUSBC);
1312 tegra_powergate_power_off(TEGRA_POWERGATE_XUSBA);
1313 } else {
1314 tegra_xusb_powerdomain_remove(&pdev->dev, tegra);
1315 }
1316
1317 tegra_xusb_padctl_put(tegra->padctl);
1318
1319 return 0;
1320}
1321
1322#ifdef CONFIG_PM_SLEEP
1323static int tegra_xusb_suspend(struct device *dev)
1324{
1325 struct tegra_xusb *tegra = dev_get_drvdata(dev);
1326 struct xhci_hcd *xhci = hcd_to_xhci(tegra->hcd);
1327 bool wakeup = device_may_wakeup(dev);
1328
1329 /* TODO: Powergate controller across suspend/resume. */
1330 return xhci_suspend(xhci, wakeup);
1331}
1332
1333static int tegra_xusb_resume(struct device *dev)
1334{
1335 struct tegra_xusb *tegra = dev_get_drvdata(dev);
1336 struct xhci_hcd *xhci = hcd_to_xhci(tegra->hcd);
1337
1338 return xhci_resume(xhci, 0);
1339}
1340#endif
1341
1342static const struct dev_pm_ops tegra_xusb_pm_ops = {
1343 SET_RUNTIME_PM_OPS(tegra_xusb_runtime_suspend,
1344 tegra_xusb_runtime_resume, NULL)
1345 SET_SYSTEM_SLEEP_PM_OPS(tegra_xusb_suspend, tegra_xusb_resume)
1346};
1347
1348static const char * const tegra124_supply_names[] = {
1349 "avddio-pex",
1350 "dvddio-pex",
1351 "avdd-usb",
1352 "avdd-pll-utmip",
1353 "avdd-pll-erefe",
1354 "avdd-usb-ss-pll",
1355 "hvdd-usb-ss",
1356 "hvdd-usb-ss-pll-e",
1357};
1358
1359static const struct tegra_xusb_phy_type tegra124_phy_types[] = {
1360 { .name = "usb3", .num = 2, },
1361 { .name = "usb2", .num = 3, },
1362 { .name = "hsic", .num = 2, },
1363};
1364
1365static const struct tegra_xusb_soc tegra124_soc = {
1366 .firmware = "nvidia/tegra124/xusb.bin",
1367 .supply_names = tegra124_supply_names,
1368 .num_supplies = ARRAY_SIZE(tegra124_supply_names),
1369 .phy_types = tegra124_phy_types,
1370 .num_types = ARRAY_SIZE(tegra124_phy_types),
1371 .ports = {
1372 .usb2 = { .offset = 4, .count = 4, },
1373 .hsic = { .offset = 6, .count = 2, },
1374 .usb3 = { .offset = 0, .count = 2, },
1375 },
1376 .scale_ss_clock = true,
1377 .has_ipfs = true,
1378};
1379MODULE_FIRMWARE("nvidia/tegra124/xusb.bin");
1380
1381static const char * const tegra210_supply_names[] = {
1382 "dvddio-pex",
1383 "hvddio-pex",
1384 "avdd-usb",
1385 "avdd-pll-utmip",
1386 "avdd-pll-uerefe",
1387 "dvdd-pex-pll",
1388 "hvdd-pex-pll-e",
1389};
1390
1391static const struct tegra_xusb_phy_type tegra210_phy_types[] = {
1392 { .name = "usb3", .num = 4, },
1393 { .name = "usb2", .num = 4, },
1394 { .name = "hsic", .num = 1, },
1395};
1396
1397static const struct tegra_xusb_soc tegra210_soc = {
1398 .firmware = "nvidia/tegra210/xusb.bin",
1399 .supply_names = tegra210_supply_names,
1400 .num_supplies = ARRAY_SIZE(tegra210_supply_names),
1401 .phy_types = tegra210_phy_types,
1402 .num_types = ARRAY_SIZE(tegra210_phy_types),
1403 .ports = {
1404 .usb2 = { .offset = 4, .count = 4, },
1405 .hsic = { .offset = 8, .count = 1, },
1406 .usb3 = { .offset = 0, .count = 4, },
1407 },
1408 .scale_ss_clock = false,
1409 .has_ipfs = true,
1410};
1411MODULE_FIRMWARE("nvidia/tegra210/xusb.bin");
1412
1413static const char * const tegra186_supply_names[] = {
1414};
1415
1416static const struct tegra_xusb_phy_type tegra186_phy_types[] = {
1417 { .name = "usb3", .num = 3, },
1418 { .name = "usb2", .num = 3, },
1419 { .name = "hsic", .num = 1, },
1420};
1421
1422static const struct tegra_xusb_soc tegra186_soc = {
1423 .firmware = "nvidia/tegra186/xusb.bin",
1424 .supply_names = tegra186_supply_names,
1425 .num_supplies = ARRAY_SIZE(tegra186_supply_names),
1426 .phy_types = tegra186_phy_types,
1427 .num_types = ARRAY_SIZE(tegra186_phy_types),
1428 .ports = {
1429 .usb3 = { .offset = 0, .count = 3, },
1430 .usb2 = { .offset = 3, .count = 3, },
1431 .hsic = { .offset = 6, .count = 1, },
1432 },
1433 .scale_ss_clock = false,
1434 .has_ipfs = false,
1435};
1436
1437static const struct of_device_id tegra_xusb_of_match[] = {
1438 { .compatible = "nvidia,tegra124-xusb", .data = &tegra124_soc },
1439 { .compatible = "nvidia,tegra210-xusb", .data = &tegra210_soc },
1440 { .compatible = "nvidia,tegra186-xusb", .data = &tegra186_soc },
1441 { },
1442};
1443MODULE_DEVICE_TABLE(of, tegra_xusb_of_match);
1444
1445static struct platform_driver tegra_xusb_driver = {
1446 .probe = tegra_xusb_probe,
1447 .remove = tegra_xusb_remove,
1448 .driver = {
1449 .name = "tegra-xusb",
1450 .pm = &tegra_xusb_pm_ops,
1451 .of_match_table = tegra_xusb_of_match,
1452 },
1453};
1454
1455static void tegra_xhci_quirks(struct device *dev, struct xhci_hcd *xhci)
1456{
1457 xhci->quirks |= XHCI_PLAT;
1458}
1459
1460static int tegra_xhci_setup(struct usb_hcd *hcd)
1461{
1462 return xhci_gen_setup(hcd, tegra_xhci_quirks);
1463}
1464
1465static const struct xhci_driver_overrides tegra_xhci_overrides __initconst = {
1466 .reset = tegra_xhci_setup,
1467};
1468
1469static int __init tegra_xusb_init(void)
1470{
1471 xhci_init_driver(&tegra_xhci_hc_driver, &tegra_xhci_overrides);
1472
1473 return platform_driver_register(&tegra_xusb_driver);
1474}
1475module_init(tegra_xusb_init);
1476
1477static void __exit tegra_xusb_exit(void)
1478{
1479 platform_driver_unregister(&tegra_xusb_driver);
1480}
1481module_exit(tegra_xusb_exit);
1482
1483MODULE_AUTHOR("Andrew Bresticker <abrestic@chromium.org>");
1484MODULE_DESCRIPTION("NVIDIA Tegra XUSB xHCI host-controller driver");
1485MODULE_LICENSE("GPL v2");