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5fd54ace | 1 | // SPDX-License-Identifier: GPL-2.0 |
e84fce0f TR |
2 | /* |
3 | * NVIDIA Tegra xHCI host controller driver | |
4 | * | |
5 | * Copyright (C) 2014 NVIDIA Corporation | |
6 | * Copyright (C) 2014 Google, Inc. | |
e84fce0f TR |
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> | |
6494a9ad | 21 | #include <linux/pm_domain.h> |
ee9e5f4c | 22 | #include <linux/pm_runtime.h> |
e84fce0f TR |
23 | #include <linux/regulator/consumer.h> |
24 | #include <linux/reset.h> | |
25 | #include <linux/slab.h> | |
58c38116 | 26 | #include <soc/tegra/pmc.h> |
e84fce0f TR |
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 | ||
110 | struct tegra_xusb_fw_header { | |
e1c3c7e5 TR |
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; | |
e84fce0f TR |
131 | u8 init_ddirect; |
132 | u8 reserved[3]; | |
e1c3c7e5 TR |
133 | __le32 phys_addr_log_buffer; |
134 | __le32 total_log_entries; | |
135 | __le32 dequeue_ptr; | |
136 | __le32 dummy_var[2]; | |
137 | __le32 fwimg_len; | |
e84fce0f | 138 | u8 magic[8]; |
e1c3c7e5 | 139 | __le32 ss_low_power_entry_timeout; |
e84fce0f TR |
140 | u8 num_hsic_port; |
141 | u8 padding[139]; /* Pad to 256 bytes */ | |
142 | }; | |
143 | ||
144 | struct tegra_xusb_phy_type { | |
145 | const char *name; | |
146 | unsigned int num; | |
147 | }; | |
148 | ||
149 | struct 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; | |
ab065e96 TR |
162 | |
163 | bool scale_ss_clock; | |
160fa3a1 | 164 | bool has_ipfs; |
e84fce0f TR |
165 | }; |
166 | ||
167 | struct 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 | ||
6494a9ad JH |
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 | ||
e84fce0f TR |
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 | ||
215 | static struct hc_driver __read_mostly tegra_xhci_hc_driver; | |
216 | ||
217 | static inline u32 fpci_readl(struct tegra_xusb *tegra, unsigned int offset) | |
218 | { | |
219 | return readl(tegra->fpci_base + offset); | |
220 | } | |
221 | ||
222 | static inline void fpci_writel(struct tegra_xusb *tegra, u32 value, | |
223 | unsigned int offset) | |
224 | { | |
225 | writel(value, tegra->fpci_base + offset); | |
226 | } | |
227 | ||
228 | static inline u32 ipfs_readl(struct tegra_xusb *tegra, unsigned int offset) | |
229 | { | |
230 | return readl(tegra->ipfs_base + offset); | |
231 | } | |
232 | ||
233 | static inline void ipfs_writel(struct tegra_xusb *tegra, u32 value, | |
234 | unsigned int offset) | |
235 | { | |
236 | writel(value, tegra->ipfs_base + offset); | |
237 | } | |
238 | ||
239 | static 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 | ||
249 | static 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 | ||
259 | static 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 | ||
323 | static 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 */ | |
330 | enum 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 | ||
e84fce0f TR |
357 | struct tegra_xusb_mbox_msg { |
358 | u32 cmd; | |
359 | u32 data; | |
360 | }; | |
361 | ||
362 | static 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 | } | |
367 | static 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 | ||
374 | static 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 | ||
387 | static 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 | ||
443 | static 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 | ||
458 | static 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; | |
36eb9350 | 468 | int err = 0; |
e84fce0f TR |
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: | |
ab065e96 TR |
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 { | |
e84fce0f | 494 | rsp.cmd = MBOX_CMD_ACK; |
ab065e96 TR |
495 | rsp.data = msg->data; |
496 | } | |
e84fce0f | 497 | |
e84fce0f TR |
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 | ||
593 | static 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 | ||
160fa3a1 JK |
618 | static void tegra_xusb_config(struct tegra_xusb *tegra, |
619 | struct resource *regs) | |
e84fce0f TR |
620 | { |
621 | u32 value; | |
622 | ||
160fa3a1 JK |
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); | |
e84fce0f | 627 | |
160fa3a1 JK |
628 | usleep_range(10, 20); |
629 | } | |
e84fce0f TR |
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 | ||
160fa3a1 JK |
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); | |
e84fce0f | 649 | |
160fa3a1 JK |
650 | /* Set hysteresis */ |
651 | ipfs_writel(tegra, 0x80, IPFS_XUSB_HOST_CLKGATE_HYSTERESIS_0); | |
652 | } | |
e84fce0f TR |
653 | } |
654 | ||
655 | static 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 | ||
ab065e96 TR |
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 | } | |
e84fce0f TR |
688 | |
689 | return 0; | |
690 | ||
691 | disable_hs_src: | |
692 | clk_disable_unprepare(tegra->hs_src_clk); | |
693 | disable_fs_src: | |
694 | clk_disable_unprepare(tegra->fs_src_clk); | |
695 | disable_falc: | |
696 | clk_disable_unprepare(tegra->falcon_clk); | |
697 | disable_ss: | |
698 | clk_disable_unprepare(tegra->ss_clk); | |
699 | disable_host: | |
700 | clk_disable_unprepare(tegra->host_clk); | |
701 | disable_plle: | |
702 | clk_disable_unprepare(tegra->pll_e); | |
703 | return err; | |
704 | } | |
705 | ||
706 | static 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 | ||
716 | static 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 | ||
735 | disable_phy: | |
736 | while (i--) { | |
737 | phy_power_off(tegra->phys[i]); | |
738 | phy_exit(tegra->phys[i]); | |
739 | } | |
740 | ||
741 | return err; | |
742 | } | |
743 | ||
744 | static 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 | ||
ee9e5f4c JH |
754 | static 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 | ||
765 | static 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 | ||
790 | disable_regulator: | |
791 | regulator_bulk_disable(tegra->soc->num_supplies, tegra->supplies); | |
792 | disable_clk: | |
793 | tegra_xusb_clk_disable(tegra); | |
794 | return err; | |
795 | } | |
796 | ||
e84fce0f TR |
797 | static 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; | |
9506b146 | 804 | time64_t timestamp; |
e84fce0f TR |
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); | |
9506b146 | 910 | time64_to_tm(timestamp, 0, &time); |
e84fce0f TR |
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 | ||
6494a9ad JH |
919 | static 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); | |
0326ccb5 | 926 | if (!IS_ERR_OR_NULL(tegra->genpd_dev_ss)) |
6494a9ad | 927 | dev_pm_domain_detach(tegra->genpd_dev_ss, true); |
0326ccb5 | 928 | if (!IS_ERR_OR_NULL(tegra->genpd_dev_host)) |
6494a9ad JH |
929 | dev_pm_domain_detach(tegra->genpd_dev_host, true); |
930 | } | |
931 | ||
932 | static 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 | ||
e84fce0f TR |
970 | static 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 | ||
160fa3a1 JK |
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 | } | |
e84fce0f TR |
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 | ||
e84fce0f TR |
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 | ||
6494a9ad | 1082 | if (!of_property_read_bool(pdev->dev.of_node, "power-domains")) { |
58c38116 JH |
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) { | |
6494a9ad | 1113 | tegra_powergate_power_off(TEGRA_POWERGATE_XUSBA); |
58c38116 JH |
1114 | dev_err(&pdev->dev, |
1115 | "failed to enable XUSBC domain: %d\n", err); | |
6494a9ad | 1116 | goto put_padctl; |
58c38116 | 1117 | } |
6494a9ad JH |
1118 | } else { |
1119 | err = tegra_xusb_powerdomain_init(&pdev->dev, tegra); | |
1120 | if (err) | |
1121 | goto put_powerdomains; | |
58c38116 JH |
1122 | } |
1123 | ||
e84fce0f TR |
1124 | tegra->supplies = devm_kcalloc(&pdev->dev, tegra->soc->num_supplies, |
1125 | sizeof(*tegra->supplies), GFP_KERNEL); | |
1126 | if (!tegra->supplies) { | |
1127 | err = -ENOMEM; | |
6494a9ad | 1128 | goto put_powerdomains; |
e84fce0f TR |
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); | |
6494a9ad | 1138 | goto put_powerdomains; |
e84fce0f TR |
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) { | |
e84fce0f | 1147 | err = -ENOMEM; |
6494a9ad | 1148 | goto put_powerdomains; |
e84fce0f TR |
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); | |
6494a9ad | 1164 | goto put_powerdomains; |
e84fce0f TR |
1165 | } |
1166 | ||
1167 | tegra->phys[k++] = phy; | |
1168 | } | |
1169 | } | |
1170 | ||
f468b55c JH |
1171 | tegra->hcd = usb_create_hcd(&tegra_xhci_hc_driver, &pdev->dev, |
1172 | dev_name(&pdev->dev)); | |
1173 | if (!tegra->hcd) { | |
1174 | err = -ENOMEM; | |
6494a9ad | 1175 | goto put_powerdomains; |
f468b55c JH |
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 | ||
ee9e5f4c | 1184 | pm_runtime_enable(&pdev->dev); |
380375b9 | 1185 | if (pm_runtime_enabled(&pdev->dev)) |
ee9e5f4c JH |
1186 | err = pm_runtime_get_sync(&pdev->dev); |
1187 | else | |
1188 | err = tegra_xusb_runtime_resume(&pdev->dev); | |
e84fce0f | 1189 | |
e84fce0f | 1190 | if (err < 0) { |
ee9e5f4c JH |
1191 | dev_err(&pdev->dev, "failed to enable device: %d\n", err); |
1192 | goto disable_rpm; | |
e84fce0f TR |
1193 | } |
1194 | ||
160fa3a1 | 1195 | tegra_xusb_config(tegra, regs); |
e84fce0f | 1196 | |
993cc875 NK |
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 | ||
e84fce0f TR |
1207 | err = tegra_xusb_load_firmware(tegra); |
1208 | if (err < 0) { | |
1209 | dev_err(&pdev->dev, "failed to load firmware: %d\n", err); | |
ee9e5f4c | 1210 | goto put_rpm; |
e84fce0f TR |
1211 | } |
1212 | ||
e84fce0f TR |
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); | |
ee9e5f4c | 1220 | goto put_rpm; |
e84fce0f TR |
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"); | |
b175b38a | 1233 | err = -ENOMEM; |
e84fce0f TR |
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 | ||
1269 | remove_usb3: | |
1270 | usb_remove_hcd(xhci->shared_hcd); | |
1271 | put_usb3: | |
1272 | usb_put_hcd(xhci->shared_hcd); | |
1273 | remove_usb2: | |
1274 | usb_remove_hcd(tegra->hcd); | |
ee9e5f4c JH |
1275 | put_rpm: |
1276 | if (!pm_runtime_status_suspended(&pdev->dev)) | |
1277 | tegra_xusb_runtime_suspend(&pdev->dev); | |
1278 | disable_rpm: | |
1279 | pm_runtime_disable(&pdev->dev); | |
f468b55c | 1280 | usb_put_hcd(tegra->hcd); |
6494a9ad JH |
1281 | put_powerdomains: |
1282 | if (!of_property_read_bool(pdev->dev.of_node, "power-domains")) { | |
58c38116 | 1283 | tegra_powergate_power_off(TEGRA_POWERGATE_XUSBC); |
58c38116 | 1284 | tegra_powergate_power_off(TEGRA_POWERGATE_XUSBA); |
6494a9ad JH |
1285 | } else { |
1286 | tegra_xusb_powerdomain_remove(&pdev->dev, tegra); | |
1287 | } | |
e84fce0f TR |
1288 | put_padctl: |
1289 | tegra_xusb_padctl_put(tegra->padctl); | |
1290 | return err; | |
1291 | } | |
1292 | ||
1293 | static 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); | |
f0680904 | 1300 | xhci->shared_hcd = NULL; |
e84fce0f TR |
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 | ||
ee9e5f4c JH |
1307 | pm_runtime_put_sync(&pdev->dev); |
1308 | pm_runtime_disable(&pdev->dev); | |
e84fce0f | 1309 | |
6494a9ad | 1310 | if (!of_property_read_bool(pdev->dev.of_node, "power-domains")) { |
8c14796b JH |
1311 | tegra_powergate_power_off(TEGRA_POWERGATE_XUSBC); |
1312 | tegra_powergate_power_off(TEGRA_POWERGATE_XUSBA); | |
6494a9ad JH |
1313 | } else { |
1314 | tegra_xusb_powerdomain_remove(&pdev->dev, tegra); | |
8c14796b JH |
1315 | } |
1316 | ||
e84fce0f TR |
1317 | tegra_xusb_padctl_put(tegra->padctl); |
1318 | ||
1319 | return 0; | |
1320 | } | |
1321 | ||
1322 | #ifdef CONFIG_PM_SLEEP | |
1323 | static 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 | ||
1333 | static 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 | ||
1342 | static const struct dev_pm_ops tegra_xusb_pm_ops = { | |
ee9e5f4c JH |
1343 | SET_RUNTIME_PM_OPS(tegra_xusb_runtime_suspend, |
1344 | tegra_xusb_runtime_resume, NULL) | |
e84fce0f TR |
1345 | SET_SYSTEM_SLEEP_PM_OPS(tegra_xusb_suspend, tegra_xusb_resume) |
1346 | }; | |
1347 | ||
1348 | static 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 | ||
1359 | static 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 | ||
1365 | static 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 | }, | |
ab065e96 | 1376 | .scale_ss_clock = true, |
160fa3a1 | 1377 | .has_ipfs = true, |
e84fce0f TR |
1378 | }; |
1379 | MODULE_FIRMWARE("nvidia/tegra124/xusb.bin"); | |
1380 | ||
ab065e96 TR |
1381 | static 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 | ||
1391 | static 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 | ||
1397 | static 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, | |
160fa3a1 | 1409 | .has_ipfs = true, |
ab065e96 TR |
1410 | }; |
1411 | MODULE_FIRMWARE("nvidia/tegra210/xusb.bin"); | |
1412 | ||
5f9be5f3 JK |
1413 | static const char * const tegra186_supply_names[] = { |
1414 | }; | |
1415 | ||
1416 | static 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 | ||
1422 | static 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 | ||
e84fce0f TR |
1437 | static const struct of_device_id tegra_xusb_of_match[] = { |
1438 | { .compatible = "nvidia,tegra124-xusb", .data = &tegra124_soc }, | |
ab065e96 | 1439 | { .compatible = "nvidia,tegra210-xusb", .data = &tegra210_soc }, |
5f9be5f3 | 1440 | { .compatible = "nvidia,tegra186-xusb", .data = &tegra186_soc }, |
e84fce0f TR |
1441 | { }, |
1442 | }; | |
1443 | MODULE_DEVICE_TABLE(of, tegra_xusb_of_match); | |
1444 | ||
1445 | static 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 | ||
1455 | static void tegra_xhci_quirks(struct device *dev, struct xhci_hcd *xhci) | |
1456 | { | |
1457 | xhci->quirks |= XHCI_PLAT; | |
1458 | } | |
1459 | ||
1460 | static int tegra_xhci_setup(struct usb_hcd *hcd) | |
1461 | { | |
1462 | return xhci_gen_setup(hcd, tegra_xhci_quirks); | |
1463 | } | |
1464 | ||
1465 | static const struct xhci_driver_overrides tegra_xhci_overrides __initconst = { | |
e84fce0f TR |
1466 | .reset = tegra_xhci_setup, |
1467 | }; | |
1468 | ||
1469 | static 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 | } | |
1475 | module_init(tegra_xusb_init); | |
1476 | ||
1477 | static void __exit tegra_xusb_exit(void) | |
1478 | { | |
1479 | platform_driver_unregister(&tegra_xusb_driver); | |
1480 | } | |
1481 | module_exit(tegra_xusb_exit); | |
1482 | ||
1483 | MODULE_AUTHOR("Andrew Bresticker <abrestic@chromium.org>"); | |
1484 | MODULE_DESCRIPTION("NVIDIA Tegra XUSB xHCI host-controller driver"); | |
1485 | MODULE_LICENSE("GPL v2"); |