1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * MHI PCI driver - MHI over PCI controller driver
5 * This module is a generic driver for registering MHI-over-PCI devices,
6 * such as PCIe QCOM modems.
8 * Copyright (C) 2020 Linaro Ltd <loic.poulain@linaro.org>
11 #include <linux/aer.h>
12 #include <linux/delay.h>
13 #include <linux/device.h>
14 #include <linux/mhi.h>
15 #include <linux/module.h>
16 #include <linux/pci.h>
17 #include <linux/pm_runtime.h>
18 #include <linux/timer.h>
19 #include <linux/workqueue.h>
21 #define MHI_PCI_DEFAULT_BAR_NUM 0
23 #define MHI_POST_RESET_DELAY_MS 2000
25 #define HEALTH_CHECK_PERIOD (HZ * 2)
28 * struct mhi_pci_dev_info - MHI PCI device specific information
29 * @config: MHI controller configuration
30 * @name: name of the PCI module
31 * @fw: firmware path (if any)
32 * @edl: emergency download mode firmware path (if any)
33 * @bar_num: PCI base address register to use for MHI MMIO register space
34 * @dma_data_width: DMA transfer word size (32 or 64 bits)
35 * @mru_default: default MRU size for MBIM network packets
36 * @sideband_wake: Devices using dedicated sideband GPIO for wakeup instead
37 * of inband wake support (such as sdx24)
39 struct mhi_pci_dev_info {
40 const struct mhi_controller_config *config;
45 unsigned int dma_data_width;
46 unsigned int mru_default;
50 #define MHI_CHANNEL_CONFIG_UL(ch_num, ch_name, el_count, ev_ring) \
54 .num_elements = el_count, \
55 .event_ring = ev_ring, \
56 .dir = DMA_TO_DEVICE, \
57 .ee_mask = BIT(MHI_EE_AMSS), \
59 .doorbell = MHI_DB_BRST_DISABLE, \
60 .lpm_notify = false, \
61 .offload_channel = false, \
62 .doorbell_mode_switch = false, \
65 #define MHI_CHANNEL_CONFIG_DL(ch_num, ch_name, el_count, ev_ring) \
69 .num_elements = el_count, \
70 .event_ring = ev_ring, \
71 .dir = DMA_FROM_DEVICE, \
72 .ee_mask = BIT(MHI_EE_AMSS), \
74 .doorbell = MHI_DB_BRST_DISABLE, \
75 .lpm_notify = false, \
76 .offload_channel = false, \
77 .doorbell_mode_switch = false, \
80 #define MHI_CHANNEL_CONFIG_DL_AUTOQUEUE(ch_num, ch_name, el_count, ev_ring) \
84 .num_elements = el_count, \
85 .event_ring = ev_ring, \
86 .dir = DMA_FROM_DEVICE, \
87 .ee_mask = BIT(MHI_EE_AMSS), \
89 .doorbell = MHI_DB_BRST_DISABLE, \
90 .lpm_notify = false, \
91 .offload_channel = false, \
92 .doorbell_mode_switch = false, \
96 #define MHI_EVENT_CONFIG_CTRL(ev_ring, el_count) \
98 .num_elements = el_count, \
99 .irq_moderation_ms = 0, \
100 .irq = (ev_ring) + 1, \
102 .mode = MHI_DB_BRST_DISABLE, \
103 .data_type = MHI_ER_CTRL, \
104 .hardware_event = false, \
105 .client_managed = false, \
106 .offload_channel = false, \
109 #define MHI_CHANNEL_CONFIG_HW_UL(ch_num, ch_name, el_count, ev_ring) \
113 .num_elements = el_count, \
114 .event_ring = ev_ring, \
115 .dir = DMA_TO_DEVICE, \
116 .ee_mask = BIT(MHI_EE_AMSS), \
118 .doorbell = MHI_DB_BRST_ENABLE, \
119 .lpm_notify = false, \
120 .offload_channel = false, \
121 .doorbell_mode_switch = true, \
124 #define MHI_CHANNEL_CONFIG_HW_DL(ch_num, ch_name, el_count, ev_ring) \
128 .num_elements = el_count, \
129 .event_ring = ev_ring, \
130 .dir = DMA_FROM_DEVICE, \
131 .ee_mask = BIT(MHI_EE_AMSS), \
133 .doorbell = MHI_DB_BRST_ENABLE, \
134 .lpm_notify = false, \
135 .offload_channel = false, \
136 .doorbell_mode_switch = true, \
139 #define MHI_CHANNEL_CONFIG_UL_SBL(ch_num, ch_name, el_count, ev_ring) \
143 .num_elements = el_count, \
144 .event_ring = ev_ring, \
145 .dir = DMA_TO_DEVICE, \
146 .ee_mask = BIT(MHI_EE_SBL), \
148 .doorbell = MHI_DB_BRST_DISABLE, \
149 .lpm_notify = false, \
150 .offload_channel = false, \
151 .doorbell_mode_switch = false, \
154 #define MHI_CHANNEL_CONFIG_DL_SBL(ch_num, ch_name, el_count, ev_ring) \
158 .num_elements = el_count, \
159 .event_ring = ev_ring, \
160 .dir = DMA_FROM_DEVICE, \
161 .ee_mask = BIT(MHI_EE_SBL), \
163 .doorbell = MHI_DB_BRST_DISABLE, \
164 .lpm_notify = false, \
165 .offload_channel = false, \
166 .doorbell_mode_switch = false, \
169 #define MHI_CHANNEL_CONFIG_UL_FP(ch_num, ch_name, el_count, ev_ring) \
173 .num_elements = el_count, \
174 .event_ring = ev_ring, \
175 .dir = DMA_TO_DEVICE, \
176 .ee_mask = BIT(MHI_EE_FP), \
178 .doorbell = MHI_DB_BRST_DISABLE, \
179 .lpm_notify = false, \
180 .offload_channel = false, \
181 .doorbell_mode_switch = false, \
184 #define MHI_CHANNEL_CONFIG_DL_FP(ch_num, ch_name, el_count, ev_ring) \
188 .num_elements = el_count, \
189 .event_ring = ev_ring, \
190 .dir = DMA_FROM_DEVICE, \
191 .ee_mask = BIT(MHI_EE_FP), \
193 .doorbell = MHI_DB_BRST_DISABLE, \
194 .lpm_notify = false, \
195 .offload_channel = false, \
196 .doorbell_mode_switch = false, \
199 #define MHI_EVENT_CONFIG_DATA(ev_ring, el_count) \
201 .num_elements = el_count, \
202 .irq_moderation_ms = 5, \
203 .irq = (ev_ring) + 1, \
205 .mode = MHI_DB_BRST_DISABLE, \
206 .data_type = MHI_ER_DATA, \
207 .hardware_event = false, \
208 .client_managed = false, \
209 .offload_channel = false, \
212 #define MHI_EVENT_CONFIG_HW_DATA(ev_ring, el_count, ch_num) \
214 .num_elements = el_count, \
215 .irq_moderation_ms = 1, \
216 .irq = (ev_ring) + 1, \
218 .mode = MHI_DB_BRST_DISABLE, \
219 .data_type = MHI_ER_DATA, \
220 .hardware_event = true, \
221 .client_managed = false, \
222 .offload_channel = false, \
226 static const struct mhi_channel_config modem_qcom_v1_mhi_channels[] = {
227 MHI_CHANNEL_CONFIG_UL(4, "DIAG", 16, 1),
228 MHI_CHANNEL_CONFIG_DL(5, "DIAG", 16, 1),
229 MHI_CHANNEL_CONFIG_UL(12, "MBIM", 4, 0),
230 MHI_CHANNEL_CONFIG_DL(13, "MBIM", 4, 0),
231 MHI_CHANNEL_CONFIG_UL(14, "QMI", 4, 0),
232 MHI_CHANNEL_CONFIG_DL(15, "QMI", 4, 0),
233 MHI_CHANNEL_CONFIG_UL(20, "IPCR", 8, 0),
234 MHI_CHANNEL_CONFIG_DL_AUTOQUEUE(21, "IPCR", 8, 0),
235 MHI_CHANNEL_CONFIG_UL_FP(34, "FIREHOSE", 32, 0),
236 MHI_CHANNEL_CONFIG_DL_FP(35, "FIREHOSE", 32, 0),
237 MHI_CHANNEL_CONFIG_HW_UL(100, "IP_HW0", 128, 2),
238 MHI_CHANNEL_CONFIG_HW_DL(101, "IP_HW0", 128, 3),
241 static struct mhi_event_config modem_qcom_v1_mhi_events[] = {
242 /* first ring is control+data ring */
243 MHI_EVENT_CONFIG_CTRL(0, 64),
244 /* DIAG dedicated event ring */
245 MHI_EVENT_CONFIG_DATA(1, 128),
246 /* Hardware channels request dedicated hardware event rings */
247 MHI_EVENT_CONFIG_HW_DATA(2, 1024, 100),
248 MHI_EVENT_CONFIG_HW_DATA(3, 2048, 101)
251 static const struct mhi_controller_config modem_qcom_v1_mhiv_config = {
254 .num_channels = ARRAY_SIZE(modem_qcom_v1_mhi_channels),
255 .ch_cfg = modem_qcom_v1_mhi_channels,
256 .num_events = ARRAY_SIZE(modem_qcom_v1_mhi_events),
257 .event_cfg = modem_qcom_v1_mhi_events,
260 static const struct mhi_pci_dev_info mhi_qcom_sdx65_info = {
261 .name = "qcom-sdx65m",
262 .fw = "qcom/sdx65m/xbl.elf",
263 .edl = "qcom/sdx65m/edl.mbn",
264 .config = &modem_qcom_v1_mhiv_config,
265 .bar_num = MHI_PCI_DEFAULT_BAR_NUM,
266 .dma_data_width = 32,
267 .sideband_wake = false,
270 static const struct mhi_pci_dev_info mhi_qcom_sdx55_info = {
271 .name = "qcom-sdx55m",
272 .fw = "qcom/sdx55m/sbl1.mbn",
273 .edl = "qcom/sdx55m/edl.mbn",
274 .config = &modem_qcom_v1_mhiv_config,
275 .bar_num = MHI_PCI_DEFAULT_BAR_NUM,
276 .dma_data_width = 32,
277 .mru_default = 32768,
278 .sideband_wake = false,
281 static const struct mhi_pci_dev_info mhi_qcom_sdx24_info = {
282 .name = "qcom-sdx24",
283 .edl = "qcom/prog_firehose_sdx24.mbn",
284 .config = &modem_qcom_v1_mhiv_config,
285 .bar_num = MHI_PCI_DEFAULT_BAR_NUM,
286 .dma_data_width = 32,
287 .sideband_wake = true,
290 static const struct mhi_channel_config mhi_quectel_em1xx_channels[] = {
291 MHI_CHANNEL_CONFIG_UL(0, "NMEA", 32, 0),
292 MHI_CHANNEL_CONFIG_DL(1, "NMEA", 32, 0),
293 MHI_CHANNEL_CONFIG_UL_SBL(2, "SAHARA", 32, 0),
294 MHI_CHANNEL_CONFIG_DL_SBL(3, "SAHARA", 32, 0),
295 MHI_CHANNEL_CONFIG_UL(4, "DIAG", 32, 1),
296 MHI_CHANNEL_CONFIG_DL(5, "DIAG", 32, 1),
297 MHI_CHANNEL_CONFIG_UL(12, "MBIM", 32, 0),
298 MHI_CHANNEL_CONFIG_DL(13, "MBIM", 32, 0),
299 MHI_CHANNEL_CONFIG_UL(32, "DUN", 32, 0),
300 MHI_CHANNEL_CONFIG_DL(33, "DUN", 32, 0),
301 /* The EDL firmware is a flash-programmer exposing firehose protocol */
302 MHI_CHANNEL_CONFIG_UL_FP(34, "FIREHOSE", 32, 0),
303 MHI_CHANNEL_CONFIG_DL_FP(35, "FIREHOSE", 32, 0),
304 MHI_CHANNEL_CONFIG_HW_UL(100, "IP_HW0_MBIM", 128, 2),
305 MHI_CHANNEL_CONFIG_HW_DL(101, "IP_HW0_MBIM", 128, 3),
308 static struct mhi_event_config mhi_quectel_em1xx_events[] = {
309 MHI_EVENT_CONFIG_CTRL(0, 128),
310 MHI_EVENT_CONFIG_DATA(1, 128),
311 MHI_EVENT_CONFIG_HW_DATA(2, 1024, 100),
312 MHI_EVENT_CONFIG_HW_DATA(3, 1024, 101)
315 static const struct mhi_controller_config modem_quectel_em1xx_config = {
318 .num_channels = ARRAY_SIZE(mhi_quectel_em1xx_channels),
319 .ch_cfg = mhi_quectel_em1xx_channels,
320 .num_events = ARRAY_SIZE(mhi_quectel_em1xx_events),
321 .event_cfg = mhi_quectel_em1xx_events,
324 static const struct mhi_pci_dev_info mhi_quectel_em1xx_info = {
325 .name = "quectel-em1xx",
326 .edl = "qcom/prog_firehose_sdx24.mbn",
327 .config = &modem_quectel_em1xx_config,
328 .bar_num = MHI_PCI_DEFAULT_BAR_NUM,
329 .dma_data_width = 32,
330 .mru_default = 32768,
331 .sideband_wake = true,
334 static const struct mhi_channel_config mhi_foxconn_sdx55_channels[] = {
335 MHI_CHANNEL_CONFIG_UL(0, "LOOPBACK", 32, 0),
336 MHI_CHANNEL_CONFIG_DL(1, "LOOPBACK", 32, 0),
337 MHI_CHANNEL_CONFIG_UL(4, "DIAG", 32, 1),
338 MHI_CHANNEL_CONFIG_DL(5, "DIAG", 32, 1),
339 MHI_CHANNEL_CONFIG_UL(12, "MBIM", 32, 0),
340 MHI_CHANNEL_CONFIG_DL(13, "MBIM", 32, 0),
341 MHI_CHANNEL_CONFIG_UL(32, "DUN", 32, 0),
342 MHI_CHANNEL_CONFIG_DL(33, "DUN", 32, 0),
343 MHI_CHANNEL_CONFIG_HW_UL(100, "IP_HW0_MBIM", 128, 2),
344 MHI_CHANNEL_CONFIG_HW_DL(101, "IP_HW0_MBIM", 128, 3),
347 static struct mhi_event_config mhi_foxconn_sdx55_events[] = {
348 MHI_EVENT_CONFIG_CTRL(0, 128),
349 MHI_EVENT_CONFIG_DATA(1, 128),
350 MHI_EVENT_CONFIG_HW_DATA(2, 1024, 100),
351 MHI_EVENT_CONFIG_HW_DATA(3, 1024, 101)
354 static const struct mhi_controller_config modem_foxconn_sdx55_config = {
357 .num_channels = ARRAY_SIZE(mhi_foxconn_sdx55_channels),
358 .ch_cfg = mhi_foxconn_sdx55_channels,
359 .num_events = ARRAY_SIZE(mhi_foxconn_sdx55_events),
360 .event_cfg = mhi_foxconn_sdx55_events,
363 static const struct mhi_pci_dev_info mhi_foxconn_sdx55_info = {
364 .name = "foxconn-sdx55",
365 .fw = "qcom/sdx55m/sbl1.mbn",
366 .edl = "qcom/sdx55m/edl.mbn",
367 .config = &modem_foxconn_sdx55_config,
368 .bar_num = MHI_PCI_DEFAULT_BAR_NUM,
369 .dma_data_width = 32,
370 .mru_default = 32768,
371 .sideband_wake = false,
374 static const struct mhi_pci_dev_info mhi_foxconn_sdx65_info = {
375 .name = "foxconn-sdx65",
376 .config = &modem_foxconn_sdx55_config,
377 .bar_num = MHI_PCI_DEFAULT_BAR_NUM,
378 .dma_data_width = 32,
379 .mru_default = 32768,
380 .sideband_wake = false,
383 static const struct mhi_channel_config mhi_mv3x_channels[] = {
384 MHI_CHANNEL_CONFIG_UL(0, "LOOPBACK", 64, 0),
385 MHI_CHANNEL_CONFIG_DL(1, "LOOPBACK", 64, 0),
386 /* MBIM Control Channel */
387 MHI_CHANNEL_CONFIG_UL(12, "MBIM", 64, 0),
388 MHI_CHANNEL_CONFIG_DL(13, "MBIM", 64, 0),
389 /* MBIM Data Channel */
390 MHI_CHANNEL_CONFIG_HW_UL(100, "IP_HW0_MBIM", 512, 2),
391 MHI_CHANNEL_CONFIG_HW_DL(101, "IP_HW0_MBIM", 512, 3),
394 static struct mhi_event_config mhi_mv3x_events[] = {
395 MHI_EVENT_CONFIG_CTRL(0, 256),
396 MHI_EVENT_CONFIG_DATA(1, 256),
397 MHI_EVENT_CONFIG_HW_DATA(2, 1024, 100),
398 MHI_EVENT_CONFIG_HW_DATA(3, 1024, 101),
401 static const struct mhi_controller_config modem_mv3x_config = {
404 .num_channels = ARRAY_SIZE(mhi_mv3x_channels),
405 .ch_cfg = mhi_mv3x_channels,
406 .num_events = ARRAY_SIZE(mhi_mv3x_events),
407 .event_cfg = mhi_mv3x_events,
410 static const struct mhi_pci_dev_info mhi_mv31_info = {
411 .name = "cinterion-mv31",
412 .config = &modem_mv3x_config,
413 .bar_num = MHI_PCI_DEFAULT_BAR_NUM,
414 .dma_data_width = 32,
415 .mru_default = 32768,
418 static const struct mhi_pci_dev_info mhi_mv32_info = {
419 .name = "cinterion-mv32",
420 .config = &modem_mv3x_config,
421 .bar_num = MHI_PCI_DEFAULT_BAR_NUM,
422 .dma_data_width = 32,
423 .mru_default = 32768,
426 static const struct mhi_channel_config mhi_sierra_em919x_channels[] = {
427 MHI_CHANNEL_CONFIG_UL_SBL(2, "SAHARA", 32, 0),
428 MHI_CHANNEL_CONFIG_DL_SBL(3, "SAHARA", 256, 0),
429 MHI_CHANNEL_CONFIG_UL(4, "DIAG", 32, 0),
430 MHI_CHANNEL_CONFIG_DL(5, "DIAG", 32, 0),
431 MHI_CHANNEL_CONFIG_UL(12, "MBIM", 128, 0),
432 MHI_CHANNEL_CONFIG_DL(13, "MBIM", 128, 0),
433 MHI_CHANNEL_CONFIG_UL(14, "QMI", 32, 0),
434 MHI_CHANNEL_CONFIG_DL(15, "QMI", 32, 0),
435 MHI_CHANNEL_CONFIG_UL(32, "DUN", 32, 0),
436 MHI_CHANNEL_CONFIG_DL(33, "DUN", 32, 0),
437 MHI_CHANNEL_CONFIG_HW_UL(100, "IP_HW0", 512, 1),
438 MHI_CHANNEL_CONFIG_HW_DL(101, "IP_HW0", 512, 2),
441 static struct mhi_event_config modem_sierra_em919x_mhi_events[] = {
442 /* first ring is control+data and DIAG ring */
443 MHI_EVENT_CONFIG_CTRL(0, 2048),
444 /* Hardware channels request dedicated hardware event rings */
445 MHI_EVENT_CONFIG_HW_DATA(1, 2048, 100),
446 MHI_EVENT_CONFIG_HW_DATA(2, 2048, 101)
449 static const struct mhi_controller_config modem_sierra_em919x_config = {
452 .num_channels = ARRAY_SIZE(mhi_sierra_em919x_channels),
453 .ch_cfg = mhi_sierra_em919x_channels,
454 .num_events = ARRAY_SIZE(modem_sierra_em919x_mhi_events),
455 .event_cfg = modem_sierra_em919x_mhi_events,
458 static const struct mhi_pci_dev_info mhi_sierra_em919x_info = {
459 .name = "sierra-em919x",
460 .config = &modem_sierra_em919x_config,
461 .bar_num = MHI_PCI_DEFAULT_BAR_NUM,
462 .dma_data_width = 32,
463 .sideband_wake = false,
466 static const struct mhi_channel_config mhi_telit_fn980_hw_v1_channels[] = {
467 MHI_CHANNEL_CONFIG_UL(14, "QMI", 32, 0),
468 MHI_CHANNEL_CONFIG_DL(15, "QMI", 32, 0),
469 MHI_CHANNEL_CONFIG_UL(20, "IPCR", 16, 0),
470 MHI_CHANNEL_CONFIG_DL_AUTOQUEUE(21, "IPCR", 16, 0),
471 MHI_CHANNEL_CONFIG_HW_UL(100, "IP_HW0", 128, 1),
472 MHI_CHANNEL_CONFIG_HW_DL(101, "IP_HW0", 128, 2),
475 static struct mhi_event_config mhi_telit_fn980_hw_v1_events[] = {
476 MHI_EVENT_CONFIG_CTRL(0, 128),
477 MHI_EVENT_CONFIG_HW_DATA(1, 1024, 100),
478 MHI_EVENT_CONFIG_HW_DATA(2, 2048, 101)
481 static struct mhi_controller_config modem_telit_fn980_hw_v1_config = {
484 .num_channels = ARRAY_SIZE(mhi_telit_fn980_hw_v1_channels),
485 .ch_cfg = mhi_telit_fn980_hw_v1_channels,
486 .num_events = ARRAY_SIZE(mhi_telit_fn980_hw_v1_events),
487 .event_cfg = mhi_telit_fn980_hw_v1_events,
490 static const struct mhi_pci_dev_info mhi_telit_fn980_hw_v1_info = {
491 .name = "telit-fn980-hwv1",
492 .fw = "qcom/sdx55m/sbl1.mbn",
493 .edl = "qcom/sdx55m/edl.mbn",
494 .config = &modem_telit_fn980_hw_v1_config,
495 .bar_num = MHI_PCI_DEFAULT_BAR_NUM,
496 .dma_data_width = 32,
497 .mru_default = 32768,
498 .sideband_wake = false,
501 static const struct mhi_channel_config mhi_telit_fn990_channels[] = {
502 MHI_CHANNEL_CONFIG_UL_SBL(2, "SAHARA", 32, 0),
503 MHI_CHANNEL_CONFIG_DL_SBL(3, "SAHARA", 32, 0),
504 MHI_CHANNEL_CONFIG_UL(4, "DIAG", 64, 1),
505 MHI_CHANNEL_CONFIG_DL(5, "DIAG", 64, 1),
506 MHI_CHANNEL_CONFIG_UL(12, "MBIM", 32, 0),
507 MHI_CHANNEL_CONFIG_DL(13, "MBIM", 32, 0),
508 MHI_CHANNEL_CONFIG_UL(32, "DUN", 32, 0),
509 MHI_CHANNEL_CONFIG_DL(33, "DUN", 32, 0),
510 MHI_CHANNEL_CONFIG_HW_UL(100, "IP_HW0_MBIM", 128, 2),
511 MHI_CHANNEL_CONFIG_HW_DL(101, "IP_HW0_MBIM", 128, 3),
514 static struct mhi_event_config mhi_telit_fn990_events[] = {
515 MHI_EVENT_CONFIG_CTRL(0, 128),
516 MHI_EVENT_CONFIG_DATA(1, 128),
517 MHI_EVENT_CONFIG_HW_DATA(2, 1024, 100),
518 MHI_EVENT_CONFIG_HW_DATA(3, 2048, 101)
521 static const struct mhi_controller_config modem_telit_fn990_config = {
524 .num_channels = ARRAY_SIZE(mhi_telit_fn990_channels),
525 .ch_cfg = mhi_telit_fn990_channels,
526 .num_events = ARRAY_SIZE(mhi_telit_fn990_events),
527 .event_cfg = mhi_telit_fn990_events,
530 static const struct mhi_pci_dev_info mhi_telit_fn990_info = {
531 .name = "telit-fn990",
532 .config = &modem_telit_fn990_config,
533 .bar_num = MHI_PCI_DEFAULT_BAR_NUM,
534 .dma_data_width = 32,
535 .sideband_wake = false,
536 .mru_default = 32768,
539 /* Keep the list sorted based on the PID. New VID should be added as the last entry */
540 static const struct pci_device_id mhi_pci_id_table[] = {
541 { PCI_DEVICE(PCI_VENDOR_ID_QCOM, 0x0304),
542 .driver_data = (kernel_ulong_t) &mhi_qcom_sdx24_info },
543 /* EM919x (sdx55), use the same vid:pid as qcom-sdx55m */
544 { PCI_DEVICE_SUB(PCI_VENDOR_ID_QCOM, 0x0306, 0x18d7, 0x0200),
545 .driver_data = (kernel_ulong_t) &mhi_sierra_em919x_info },
546 /* Telit FN980 hardware revision v1 */
547 { PCI_DEVICE_SUB(PCI_VENDOR_ID_QCOM, 0x0306, 0x1C5D, 0x2000),
548 .driver_data = (kernel_ulong_t) &mhi_telit_fn980_hw_v1_info },
549 { PCI_DEVICE(PCI_VENDOR_ID_QCOM, 0x0306),
550 .driver_data = (kernel_ulong_t) &mhi_qcom_sdx55_info },
552 { PCI_DEVICE_SUB(PCI_VENDOR_ID_QCOM, 0x0308, 0x1c5d, 0x2010),
553 .driver_data = (kernel_ulong_t) &mhi_telit_fn990_info },
554 { PCI_DEVICE(PCI_VENDOR_ID_QCOM, 0x0308),
555 .driver_data = (kernel_ulong_t) &mhi_qcom_sdx65_info },
556 { PCI_DEVICE(0x1eac, 0x1001), /* EM120R-GL (sdx24) */
557 .driver_data = (kernel_ulong_t) &mhi_quectel_em1xx_info },
558 { PCI_DEVICE(0x1eac, 0x1002), /* EM160R-GL (sdx24) */
559 .driver_data = (kernel_ulong_t) &mhi_quectel_em1xx_info },
560 { PCI_DEVICE(0x1eac, 0x2001), /* EM120R-GL for FCCL (sdx24) */
561 .driver_data = (kernel_ulong_t) &mhi_quectel_em1xx_info },
562 /* T99W175 (sdx55), Both for eSIM and Non-eSIM */
563 { PCI_DEVICE(PCI_VENDOR_ID_FOXCONN, 0xe0ab),
564 .driver_data = (kernel_ulong_t) &mhi_foxconn_sdx55_info },
565 /* DW5930e (sdx55), With eSIM, It's also T99W175 */
566 { PCI_DEVICE(PCI_VENDOR_ID_FOXCONN, 0xe0b0),
567 .driver_data = (kernel_ulong_t) &mhi_foxconn_sdx55_info },
568 /* DW5930e (sdx55), Non-eSIM, It's also T99W175 */
569 { PCI_DEVICE(PCI_VENDOR_ID_FOXCONN, 0xe0b1),
570 .driver_data = (kernel_ulong_t) &mhi_foxconn_sdx55_info },
571 /* T99W175 (sdx55), Based on Qualcomm new baseline */
572 { PCI_DEVICE(PCI_VENDOR_ID_FOXCONN, 0xe0bf),
573 .driver_data = (kernel_ulong_t) &mhi_foxconn_sdx55_info },
574 /* T99W175 (sdx55) */
575 { PCI_DEVICE(PCI_VENDOR_ID_FOXCONN, 0xe0c3),
576 .driver_data = (kernel_ulong_t) &mhi_foxconn_sdx55_info },
577 /* T99W368 (sdx65) */
578 { PCI_DEVICE(PCI_VENDOR_ID_FOXCONN, 0xe0d8),
579 .driver_data = (kernel_ulong_t) &mhi_foxconn_sdx65_info },
580 /* T99W373 (sdx62) */
581 { PCI_DEVICE(PCI_VENDOR_ID_FOXCONN, 0xe0d9),
582 .driver_data = (kernel_ulong_t) &mhi_foxconn_sdx65_info },
583 /* MV31-W (Cinterion) */
584 { PCI_DEVICE(0x1269, 0x00b3),
585 .driver_data = (kernel_ulong_t) &mhi_mv31_info },
586 /* MV31-W (Cinterion), based on new baseline */
587 { PCI_DEVICE(0x1269, 0x00b4),
588 .driver_data = (kernel_ulong_t) &mhi_mv31_info },
589 /* MV32-WA (Cinterion) */
590 { PCI_DEVICE(0x1269, 0x00ba),
591 .driver_data = (kernel_ulong_t) &mhi_mv32_info },
592 /* MV32-WB (Cinterion) */
593 { PCI_DEVICE(0x1269, 0x00bb),
594 .driver_data = (kernel_ulong_t) &mhi_mv32_info },
597 MODULE_DEVICE_TABLE(pci, mhi_pci_id_table);
599 enum mhi_pci_device_status {
601 MHI_PCI_DEV_SUSPENDED,
604 struct mhi_pci_device {
605 struct mhi_controller mhi_cntrl;
606 struct pci_saved_state *pci_state;
607 struct work_struct recovery_work;
608 struct timer_list health_check_timer;
609 unsigned long status;
612 static int mhi_pci_read_reg(struct mhi_controller *mhi_cntrl,
613 void __iomem *addr, u32 *out)
619 static void mhi_pci_write_reg(struct mhi_controller *mhi_cntrl,
620 void __iomem *addr, u32 val)
625 static void mhi_pci_status_cb(struct mhi_controller *mhi_cntrl,
626 enum mhi_callback cb)
628 struct pci_dev *pdev = to_pci_dev(mhi_cntrl->cntrl_dev);
630 /* Nothing to do for now */
632 case MHI_CB_FATAL_ERROR:
633 case MHI_CB_SYS_ERROR:
634 dev_warn(&pdev->dev, "firmware crashed (%u)\n", cb);
635 pm_runtime_forbid(&pdev->dev);
637 case MHI_CB_EE_MISSION_MODE:
638 pm_runtime_allow(&pdev->dev);
645 static void mhi_pci_wake_get_nop(struct mhi_controller *mhi_cntrl, bool force)
650 static void mhi_pci_wake_put_nop(struct mhi_controller *mhi_cntrl, bool override)
655 static void mhi_pci_wake_toggle_nop(struct mhi_controller *mhi_cntrl)
660 static bool mhi_pci_is_alive(struct mhi_controller *mhi_cntrl)
662 struct pci_dev *pdev = to_pci_dev(mhi_cntrl->cntrl_dev);
665 if (pci_read_config_word(pdev, PCI_VENDOR_ID, &vendor))
668 if (vendor == (u16) ~0 || vendor == 0)
674 static int mhi_pci_claim(struct mhi_controller *mhi_cntrl,
675 unsigned int bar_num, u64 dma_mask)
677 struct pci_dev *pdev = to_pci_dev(mhi_cntrl->cntrl_dev);
680 err = pci_assign_resource(pdev, bar_num);
684 err = pcim_enable_device(pdev);
686 dev_err(&pdev->dev, "failed to enable pci device: %d\n", err);
690 err = pcim_iomap_regions(pdev, 1 << bar_num, pci_name(pdev));
692 dev_err(&pdev->dev, "failed to map pci region: %d\n", err);
695 mhi_cntrl->regs = pcim_iomap_table(pdev)[bar_num];
696 mhi_cntrl->reg_len = pci_resource_len(pdev, bar_num);
698 err = dma_set_mask_and_coherent(&pdev->dev, dma_mask);
700 dev_err(&pdev->dev, "Cannot set proper DMA mask\n");
704 pci_set_master(pdev);
709 static int mhi_pci_get_irqs(struct mhi_controller *mhi_cntrl,
710 const struct mhi_controller_config *mhi_cntrl_config)
712 struct pci_dev *pdev = to_pci_dev(mhi_cntrl->cntrl_dev);
717 * Alloc one MSI vector for BHI + one vector per event ring, ideally...
718 * No explicit pci_free_irq_vectors required, done by pcim_release.
720 mhi_cntrl->nr_irqs = 1 + mhi_cntrl_config->num_events;
722 nr_vectors = pci_alloc_irq_vectors(pdev, 1, mhi_cntrl->nr_irqs, PCI_IRQ_MSI);
723 if (nr_vectors < 0) {
724 dev_err(&pdev->dev, "Error allocating MSI vectors %d\n",
729 if (nr_vectors < mhi_cntrl->nr_irqs) {
730 dev_warn(&pdev->dev, "using shared MSI\n");
732 /* Patch msi vectors, use only one (shared) */
733 for (i = 0; i < mhi_cntrl_config->num_events; i++)
734 mhi_cntrl_config->event_cfg[i].irq = 0;
735 mhi_cntrl->nr_irqs = 1;
738 irq = devm_kcalloc(&pdev->dev, mhi_cntrl->nr_irqs, sizeof(int), GFP_KERNEL);
742 for (i = 0; i < mhi_cntrl->nr_irqs; i++) {
743 int vector = i >= nr_vectors ? (nr_vectors - 1) : i;
745 irq[i] = pci_irq_vector(pdev, vector);
748 mhi_cntrl->irq = irq;
753 static int mhi_pci_runtime_get(struct mhi_controller *mhi_cntrl)
755 /* The runtime_get() MHI callback means:
756 * Do whatever is requested to leave M3.
758 return pm_runtime_get(mhi_cntrl->cntrl_dev);
761 static void mhi_pci_runtime_put(struct mhi_controller *mhi_cntrl)
763 /* The runtime_put() MHI callback means:
764 * Device can be moved in M3 state.
766 pm_runtime_mark_last_busy(mhi_cntrl->cntrl_dev);
767 pm_runtime_put(mhi_cntrl->cntrl_dev);
770 static void mhi_pci_recovery_work(struct work_struct *work)
772 struct mhi_pci_device *mhi_pdev = container_of(work, struct mhi_pci_device,
774 struct mhi_controller *mhi_cntrl = &mhi_pdev->mhi_cntrl;
775 struct pci_dev *pdev = to_pci_dev(mhi_cntrl->cntrl_dev);
778 dev_warn(&pdev->dev, "device recovery started\n");
780 del_timer(&mhi_pdev->health_check_timer);
781 pm_runtime_forbid(&pdev->dev);
783 /* Clean up MHI state */
784 if (test_and_clear_bit(MHI_PCI_DEV_STARTED, &mhi_pdev->status)) {
785 mhi_power_down(mhi_cntrl, false);
786 mhi_unprepare_after_power_down(mhi_cntrl);
789 pci_set_power_state(pdev, PCI_D0);
790 pci_load_saved_state(pdev, mhi_pdev->pci_state);
791 pci_restore_state(pdev);
793 if (!mhi_pci_is_alive(mhi_cntrl))
796 err = mhi_prepare_for_power_up(mhi_cntrl);
800 err = mhi_sync_power_up(mhi_cntrl);
804 dev_dbg(&pdev->dev, "Recovery completed\n");
806 set_bit(MHI_PCI_DEV_STARTED, &mhi_pdev->status);
807 mod_timer(&mhi_pdev->health_check_timer, jiffies + HEALTH_CHECK_PERIOD);
811 mhi_unprepare_after_power_down(mhi_cntrl);
813 if (pci_reset_function(pdev))
814 dev_err(&pdev->dev, "Recovery failed\n");
817 static void health_check(struct timer_list *t)
819 struct mhi_pci_device *mhi_pdev = from_timer(mhi_pdev, t, health_check_timer);
820 struct mhi_controller *mhi_cntrl = &mhi_pdev->mhi_cntrl;
822 if (!test_bit(MHI_PCI_DEV_STARTED, &mhi_pdev->status) ||
823 test_bit(MHI_PCI_DEV_SUSPENDED, &mhi_pdev->status))
826 if (!mhi_pci_is_alive(mhi_cntrl)) {
827 dev_err(mhi_cntrl->cntrl_dev, "Device died\n");
828 queue_work(system_long_wq, &mhi_pdev->recovery_work);
832 /* reschedule in two seconds */
833 mod_timer(&mhi_pdev->health_check_timer, jiffies + HEALTH_CHECK_PERIOD);
836 static int mhi_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id)
838 const struct mhi_pci_dev_info *info = (struct mhi_pci_dev_info *) id->driver_data;
839 const struct mhi_controller_config *mhi_cntrl_config;
840 struct mhi_pci_device *mhi_pdev;
841 struct mhi_controller *mhi_cntrl;
844 dev_dbg(&pdev->dev, "MHI PCI device found: %s\n", info->name);
846 /* mhi_pdev.mhi_cntrl must be zero-initialized */
847 mhi_pdev = devm_kzalloc(&pdev->dev, sizeof(*mhi_pdev), GFP_KERNEL);
851 INIT_WORK(&mhi_pdev->recovery_work, mhi_pci_recovery_work);
852 timer_setup(&mhi_pdev->health_check_timer, health_check, 0);
854 mhi_cntrl_config = info->config;
855 mhi_cntrl = &mhi_pdev->mhi_cntrl;
857 mhi_cntrl->cntrl_dev = &pdev->dev;
858 mhi_cntrl->iova_start = 0;
859 mhi_cntrl->iova_stop = (dma_addr_t)DMA_BIT_MASK(info->dma_data_width);
860 mhi_cntrl->fw_image = info->fw;
861 mhi_cntrl->edl_image = info->edl;
863 mhi_cntrl->read_reg = mhi_pci_read_reg;
864 mhi_cntrl->write_reg = mhi_pci_write_reg;
865 mhi_cntrl->status_cb = mhi_pci_status_cb;
866 mhi_cntrl->runtime_get = mhi_pci_runtime_get;
867 mhi_cntrl->runtime_put = mhi_pci_runtime_put;
868 mhi_cntrl->mru = info->mru_default;
870 if (info->sideband_wake) {
871 mhi_cntrl->wake_get = mhi_pci_wake_get_nop;
872 mhi_cntrl->wake_put = mhi_pci_wake_put_nop;
873 mhi_cntrl->wake_toggle = mhi_pci_wake_toggle_nop;
876 err = mhi_pci_claim(mhi_cntrl, info->bar_num, DMA_BIT_MASK(info->dma_data_width));
880 err = mhi_pci_get_irqs(mhi_cntrl, mhi_cntrl_config);
884 pci_set_drvdata(pdev, mhi_pdev);
886 /* Have stored pci confspace at hand for restore in sudden PCI error.
887 * cache the state locally and discard the PCI core one.
889 pci_save_state(pdev);
890 mhi_pdev->pci_state = pci_store_saved_state(pdev);
891 pci_load_saved_state(pdev, NULL);
893 pci_enable_pcie_error_reporting(pdev);
895 err = mhi_register_controller(mhi_cntrl, mhi_cntrl_config);
897 goto err_disable_reporting;
899 /* MHI bus does not power up the controller by default */
900 err = mhi_prepare_for_power_up(mhi_cntrl);
902 dev_err(&pdev->dev, "failed to prepare MHI controller\n");
906 err = mhi_sync_power_up(mhi_cntrl);
908 dev_err(&pdev->dev, "failed to power up MHI controller\n");
912 set_bit(MHI_PCI_DEV_STARTED, &mhi_pdev->status);
914 /* start health check */
915 mod_timer(&mhi_pdev->health_check_timer, jiffies + HEALTH_CHECK_PERIOD);
917 /* Only allow runtime-suspend if PME capable (for wakeup) */
918 if (pci_pme_capable(pdev, PCI_D3hot)) {
919 pm_runtime_set_autosuspend_delay(&pdev->dev, 2000);
920 pm_runtime_use_autosuspend(&pdev->dev);
921 pm_runtime_mark_last_busy(&pdev->dev);
922 pm_runtime_put_noidle(&pdev->dev);
928 mhi_unprepare_after_power_down(mhi_cntrl);
930 mhi_unregister_controller(mhi_cntrl);
931 err_disable_reporting:
932 pci_disable_pcie_error_reporting(pdev);
937 static void mhi_pci_remove(struct pci_dev *pdev)
939 struct mhi_pci_device *mhi_pdev = pci_get_drvdata(pdev);
940 struct mhi_controller *mhi_cntrl = &mhi_pdev->mhi_cntrl;
942 del_timer_sync(&mhi_pdev->health_check_timer);
943 cancel_work_sync(&mhi_pdev->recovery_work);
945 if (test_and_clear_bit(MHI_PCI_DEV_STARTED, &mhi_pdev->status)) {
946 mhi_power_down(mhi_cntrl, true);
947 mhi_unprepare_after_power_down(mhi_cntrl);
950 /* balancing probe put_noidle */
951 if (pci_pme_capable(pdev, PCI_D3hot))
952 pm_runtime_get_noresume(&pdev->dev);
954 mhi_unregister_controller(mhi_cntrl);
955 pci_disable_pcie_error_reporting(pdev);
958 static void mhi_pci_shutdown(struct pci_dev *pdev)
960 mhi_pci_remove(pdev);
961 pci_set_power_state(pdev, PCI_D3hot);
964 static void mhi_pci_reset_prepare(struct pci_dev *pdev)
966 struct mhi_pci_device *mhi_pdev = pci_get_drvdata(pdev);
967 struct mhi_controller *mhi_cntrl = &mhi_pdev->mhi_cntrl;
969 dev_info(&pdev->dev, "reset\n");
971 del_timer(&mhi_pdev->health_check_timer);
973 /* Clean up MHI state */
974 if (test_and_clear_bit(MHI_PCI_DEV_STARTED, &mhi_pdev->status)) {
975 mhi_power_down(mhi_cntrl, false);
976 mhi_unprepare_after_power_down(mhi_cntrl);
979 /* cause internal device reset */
980 mhi_soc_reset(mhi_cntrl);
982 /* Be sure device reset has been executed */
983 msleep(MHI_POST_RESET_DELAY_MS);
986 static void mhi_pci_reset_done(struct pci_dev *pdev)
988 struct mhi_pci_device *mhi_pdev = pci_get_drvdata(pdev);
989 struct mhi_controller *mhi_cntrl = &mhi_pdev->mhi_cntrl;
992 /* Restore initial known working PCI state */
993 pci_load_saved_state(pdev, mhi_pdev->pci_state);
994 pci_restore_state(pdev);
996 /* Is device status available ? */
997 if (!mhi_pci_is_alive(mhi_cntrl)) {
998 dev_err(&pdev->dev, "reset failed\n");
1002 err = mhi_prepare_for_power_up(mhi_cntrl);
1004 dev_err(&pdev->dev, "failed to prepare MHI controller\n");
1008 err = mhi_sync_power_up(mhi_cntrl);
1010 dev_err(&pdev->dev, "failed to power up MHI controller\n");
1011 mhi_unprepare_after_power_down(mhi_cntrl);
1015 set_bit(MHI_PCI_DEV_STARTED, &mhi_pdev->status);
1016 mod_timer(&mhi_pdev->health_check_timer, jiffies + HEALTH_CHECK_PERIOD);
1019 static pci_ers_result_t mhi_pci_error_detected(struct pci_dev *pdev,
1020 pci_channel_state_t state)
1022 struct mhi_pci_device *mhi_pdev = pci_get_drvdata(pdev);
1023 struct mhi_controller *mhi_cntrl = &mhi_pdev->mhi_cntrl;
1025 dev_err(&pdev->dev, "PCI error detected, state = %u\n", state);
1027 if (state == pci_channel_io_perm_failure)
1028 return PCI_ERS_RESULT_DISCONNECT;
1030 /* Clean up MHI state */
1031 if (test_and_clear_bit(MHI_PCI_DEV_STARTED, &mhi_pdev->status)) {
1032 mhi_power_down(mhi_cntrl, false);
1033 mhi_unprepare_after_power_down(mhi_cntrl);
1036 return PCI_ERS_RESULT_RECOVERED;
1039 pci_disable_device(pdev);
1041 return PCI_ERS_RESULT_NEED_RESET;
1044 static pci_ers_result_t mhi_pci_slot_reset(struct pci_dev *pdev)
1046 if (pci_enable_device(pdev)) {
1047 dev_err(&pdev->dev, "Cannot re-enable PCI device after reset.\n");
1048 return PCI_ERS_RESULT_DISCONNECT;
1051 return PCI_ERS_RESULT_RECOVERED;
1054 static void mhi_pci_io_resume(struct pci_dev *pdev)
1056 struct mhi_pci_device *mhi_pdev = pci_get_drvdata(pdev);
1058 dev_err(&pdev->dev, "PCI slot reset done\n");
1060 queue_work(system_long_wq, &mhi_pdev->recovery_work);
1063 static const struct pci_error_handlers mhi_pci_err_handler = {
1064 .error_detected = mhi_pci_error_detected,
1065 .slot_reset = mhi_pci_slot_reset,
1066 .resume = mhi_pci_io_resume,
1067 .reset_prepare = mhi_pci_reset_prepare,
1068 .reset_done = mhi_pci_reset_done,
1071 static int __maybe_unused mhi_pci_runtime_suspend(struct device *dev)
1073 struct pci_dev *pdev = to_pci_dev(dev);
1074 struct mhi_pci_device *mhi_pdev = dev_get_drvdata(dev);
1075 struct mhi_controller *mhi_cntrl = &mhi_pdev->mhi_cntrl;
1078 if (test_and_set_bit(MHI_PCI_DEV_SUSPENDED, &mhi_pdev->status))
1081 del_timer(&mhi_pdev->health_check_timer);
1082 cancel_work_sync(&mhi_pdev->recovery_work);
1084 if (!test_bit(MHI_PCI_DEV_STARTED, &mhi_pdev->status) ||
1085 mhi_cntrl->ee != MHI_EE_AMSS)
1086 goto pci_suspend; /* Nothing to do at MHI level */
1088 /* Transition to M3 state */
1089 err = mhi_pm_suspend(mhi_cntrl);
1091 dev_err(&pdev->dev, "failed to suspend device: %d\n", err);
1092 clear_bit(MHI_PCI_DEV_SUSPENDED, &mhi_pdev->status);
1097 pci_disable_device(pdev);
1098 pci_wake_from_d3(pdev, true);
1103 static int __maybe_unused mhi_pci_runtime_resume(struct device *dev)
1105 struct pci_dev *pdev = to_pci_dev(dev);
1106 struct mhi_pci_device *mhi_pdev = dev_get_drvdata(dev);
1107 struct mhi_controller *mhi_cntrl = &mhi_pdev->mhi_cntrl;
1110 if (!test_and_clear_bit(MHI_PCI_DEV_SUSPENDED, &mhi_pdev->status))
1113 err = pci_enable_device(pdev);
1117 pci_set_master(pdev);
1118 pci_wake_from_d3(pdev, false);
1120 if (!test_bit(MHI_PCI_DEV_STARTED, &mhi_pdev->status) ||
1121 mhi_cntrl->ee != MHI_EE_AMSS)
1122 return 0; /* Nothing to do at MHI level */
1124 /* Exit M3, transition to M0 state */
1125 err = mhi_pm_resume(mhi_cntrl);
1127 dev_err(&pdev->dev, "failed to resume device: %d\n", err);
1131 /* Resume health check */
1132 mod_timer(&mhi_pdev->health_check_timer, jiffies + HEALTH_CHECK_PERIOD);
1134 /* It can be a remote wakeup (no mhi runtime_get), update access time */
1135 pm_runtime_mark_last_busy(dev);
1140 /* Do not fail to not mess up our PCI device state, the device likely
1141 * lost power (d3cold) and we simply need to reset it from the recovery
1142 * procedure, trigger the recovery asynchronously to prevent system
1143 * suspend exit delaying.
1145 queue_work(system_long_wq, &mhi_pdev->recovery_work);
1146 pm_runtime_mark_last_busy(dev);
1151 static int __maybe_unused mhi_pci_suspend(struct device *dev)
1153 pm_runtime_disable(dev);
1154 return mhi_pci_runtime_suspend(dev);
1157 static int __maybe_unused mhi_pci_resume(struct device *dev)
1161 /* Depending the platform, device may have lost power (d3cold), we need
1162 * to resume it now to check its state and recover when necessary.
1164 ret = mhi_pci_runtime_resume(dev);
1165 pm_runtime_enable(dev);
1170 static int __maybe_unused mhi_pci_freeze(struct device *dev)
1172 struct mhi_pci_device *mhi_pdev = dev_get_drvdata(dev);
1173 struct mhi_controller *mhi_cntrl = &mhi_pdev->mhi_cntrl;
1175 /* We want to stop all operations, hibernation does not guarantee that
1176 * device will be in the same state as before freezing, especially if
1177 * the intermediate restore kernel reinitializes MHI device with new
1180 flush_work(&mhi_pdev->recovery_work);
1181 if (test_and_clear_bit(MHI_PCI_DEV_STARTED, &mhi_pdev->status)) {
1182 mhi_power_down(mhi_cntrl, true);
1183 mhi_unprepare_after_power_down(mhi_cntrl);
1189 static int __maybe_unused mhi_pci_restore(struct device *dev)
1191 struct mhi_pci_device *mhi_pdev = dev_get_drvdata(dev);
1193 /* Reinitialize the device */
1194 queue_work(system_long_wq, &mhi_pdev->recovery_work);
1199 static const struct dev_pm_ops mhi_pci_pm_ops = {
1200 SET_RUNTIME_PM_OPS(mhi_pci_runtime_suspend, mhi_pci_runtime_resume, NULL)
1201 #ifdef CONFIG_PM_SLEEP
1202 .suspend = mhi_pci_suspend,
1203 .resume = mhi_pci_resume,
1204 .freeze = mhi_pci_freeze,
1205 .thaw = mhi_pci_restore,
1206 .poweroff = mhi_pci_freeze,
1207 .restore = mhi_pci_restore,
1211 static struct pci_driver mhi_pci_driver = {
1212 .name = "mhi-pci-generic",
1213 .id_table = mhi_pci_id_table,
1214 .probe = mhi_pci_probe,
1215 .remove = mhi_pci_remove,
1216 .shutdown = mhi_pci_shutdown,
1217 .err_handler = &mhi_pci_err_handler,
1218 .driver.pm = &mhi_pci_pm_ops
1220 module_pci_driver(mhi_pci_driver);
1222 MODULE_AUTHOR("Loic Poulain <loic.poulain@linaro.org>");
1223 MODULE_DESCRIPTION("Modem Host Interface (MHI) PCI controller driver");
1224 MODULE_LICENSE("GPL");