2 * Greybus interface code
4 * Copyright 2014 Google Inc.
5 * Copyright 2014 Linaro Ltd.
7 * Released under the GPLv2 only.
10 #include <linux/delay.h>
13 #include "greybus_trace.h"
15 #define GB_INTERFACE_MODE_SWITCH_TIMEOUT 2000
17 #define GB_INTERFACE_DEVICE_ID_BAD 0xff
19 #define GB_INTERFACE_AUTOSUSPEND_MS 3000
21 /* Time required for interface to enter standby before disabling REFCLK */
22 #define GB_INTERFACE_SUSPEND_HIBERNATE_DELAY_MS 20
24 /* Don't-care selector index */
25 #define DME_SELECTOR_INDEX_NULL 0
28 /* FIXME: remove ES2 support and DME_T_TST_SRC_INCREMENT */
29 #define DME_T_TST_SRC_INCREMENT 0x4083
31 #define DME_DDBL1_MANUFACTURERID 0x5003
32 #define DME_DDBL1_PRODUCTID 0x5004
34 #define DME_TOSHIBA_ARA_VID 0x6000
35 #define DME_TOSHIBA_ARA_PID 0x6001
36 #define DME_TOSHIBA_ARA_SN0 0x6002
37 #define DME_TOSHIBA_ARA_SN1 0x6003
38 #define DME_TOSHIBA_ARA_INIT_STATUS 0x6101
40 /* DDBL1 Manufacturer and Product ids */
41 #define TOSHIBA_DMID 0x0126
42 #define TOSHIBA_ES2_BRIDGE_DPID 0x1000
43 #define TOSHIBA_ES3_APBRIDGE_DPID 0x1001
44 #define TOSHIBA_ES3_GBPHY_DPID 0x1002
46 static int gb_interface_hibernate_link(struct gb_interface *intf);
47 static int gb_interface_refclk_set(struct gb_interface *intf, bool enable);
49 static int gb_interface_dme_attr_get(struct gb_interface *intf,
52 return gb_svc_dme_peer_get(intf->hd->svc, intf->interface_id,
53 attr, DME_SELECTOR_INDEX_NULL, val);
56 static int gb_interface_read_ara_dme(struct gb_interface *intf)
62 * Unless this is a Toshiba bridge, bail out until we have defined
63 * standard Ara attributes.
65 if (intf->ddbl1_manufacturer_id != TOSHIBA_DMID) {
66 dev_err(&intf->dev, "unknown manufacturer %08x\n",
67 intf->ddbl1_manufacturer_id);
71 ret = gb_interface_dme_attr_get(intf, DME_TOSHIBA_ARA_VID,
76 ret = gb_interface_dme_attr_get(intf, DME_TOSHIBA_ARA_PID,
81 ret = gb_interface_dme_attr_get(intf, DME_TOSHIBA_ARA_SN0, &sn0);
85 ret = gb_interface_dme_attr_get(intf, DME_TOSHIBA_ARA_SN1, &sn1);
89 intf->serial_number = (u64)sn1 << 32 | sn0;
94 static int gb_interface_read_dme(struct gb_interface *intf)
98 ret = gb_interface_dme_attr_get(intf, DME_DDBL1_MANUFACTURERID,
99 &intf->ddbl1_manufacturer_id);
103 ret = gb_interface_dme_attr_get(intf, DME_DDBL1_PRODUCTID,
104 &intf->ddbl1_product_id);
108 if (intf->ddbl1_manufacturer_id == TOSHIBA_DMID &&
109 intf->ddbl1_product_id == TOSHIBA_ES2_BRIDGE_DPID) {
110 intf->quirks |= GB_INTERFACE_QUIRK_NO_ARA_IDS;
111 intf->quirks |= GB_INTERFACE_QUIRK_NO_INIT_STATUS;
114 return gb_interface_read_ara_dme(intf);
117 static int gb_interface_route_create(struct gb_interface *intf)
119 struct gb_svc *svc = intf->hd->svc;
120 u8 intf_id = intf->interface_id;
124 /* Allocate an interface device id. */
125 ret = ida_simple_get(&svc->device_id_map,
126 GB_SVC_DEVICE_ID_MIN, GB_SVC_DEVICE_ID_MAX + 1,
129 dev_err(&intf->dev, "failed to allocate device id: %d\n", ret);
134 ret = gb_svc_intf_device_id(svc, intf_id, device_id);
136 dev_err(&intf->dev, "failed to set device id %u: %d\n",
141 /* FIXME: Hard-coded AP device id. */
142 ret = gb_svc_route_create(svc, svc->ap_intf_id, GB_SVC_DEVICE_ID_AP,
145 dev_err(&intf->dev, "failed to create route: %d\n", ret);
146 goto err_svc_id_free;
149 intf->device_id = device_id;
155 * XXX Should we tell SVC that this id doesn't belong to interface
159 ida_simple_remove(&svc->device_id_map, device_id);
164 static void gb_interface_route_destroy(struct gb_interface *intf)
166 struct gb_svc *svc = intf->hd->svc;
168 if (intf->device_id == GB_INTERFACE_DEVICE_ID_BAD)
171 gb_svc_route_destroy(svc, svc->ap_intf_id, intf->interface_id);
172 ida_simple_remove(&svc->device_id_map, intf->device_id);
173 intf->device_id = GB_INTERFACE_DEVICE_ID_BAD;
176 /* Locking: Caller holds the interface mutex. */
177 static int gb_interface_legacy_mode_switch(struct gb_interface *intf)
181 dev_info(&intf->dev, "legacy mode switch detected\n");
183 /* Mark as disconnected to prevent I/O during disable. */
184 intf->disconnected = true;
185 gb_interface_disable(intf);
186 intf->disconnected = false;
188 ret = gb_interface_enable(intf);
190 dev_err(&intf->dev, "failed to re-enable interface: %d\n", ret);
191 gb_interface_deactivate(intf);
197 void gb_interface_mailbox_event(struct gb_interface *intf, u16 result,
200 mutex_lock(&intf->mutex);
204 "mailbox event with UniPro error: 0x%04x\n",
209 if (mailbox != GB_SVC_INTF_MAILBOX_GREYBUS) {
211 "mailbox event with unexpected value: 0x%08x\n",
216 if (intf->quirks & GB_INTERFACE_QUIRK_LEGACY_MODE_SWITCH) {
217 gb_interface_legacy_mode_switch(intf);
221 if (!intf->mode_switch) {
222 dev_warn(&intf->dev, "unexpected mailbox event: 0x%08x\n",
227 dev_info(&intf->dev, "mode switch detected\n");
229 complete(&intf->mode_switch_completion);
232 mutex_unlock(&intf->mutex);
237 gb_interface_disable(intf);
238 gb_interface_deactivate(intf);
239 mutex_unlock(&intf->mutex);
242 static void gb_interface_mode_switch_work(struct work_struct *work)
244 struct gb_interface *intf;
245 struct gb_control *control;
246 unsigned long timeout;
249 intf = container_of(work, struct gb_interface, mode_switch_work);
251 mutex_lock(&intf->mutex);
252 /* Make sure interface is still enabled. */
253 if (!intf->enabled) {
254 dev_dbg(&intf->dev, "mode switch aborted\n");
255 intf->mode_switch = false;
256 mutex_unlock(&intf->mutex);
257 goto out_interface_put;
261 * Prepare the control device for mode switch and make sure to get an
262 * extra reference before it goes away during interface disable.
264 control = gb_control_get(intf->control);
265 gb_control_mode_switch_prepare(control);
266 gb_interface_disable(intf);
267 mutex_unlock(&intf->mutex);
269 timeout = msecs_to_jiffies(GB_INTERFACE_MODE_SWITCH_TIMEOUT);
270 ret = wait_for_completion_interruptible_timeout(
271 &intf->mode_switch_completion, timeout);
273 /* Finalise control-connection mode switch. */
274 gb_control_mode_switch_complete(control);
275 gb_control_put(control);
278 dev_err(&intf->dev, "mode switch interrupted\n");
280 } else if (ret == 0) {
281 dev_err(&intf->dev, "mode switch timed out\n");
285 /* Re-enable (re-enumerate) interface if still active. */
286 mutex_lock(&intf->mutex);
287 intf->mode_switch = false;
289 ret = gb_interface_enable(intf);
291 dev_err(&intf->dev, "failed to re-enable interface: %d\n",
293 gb_interface_deactivate(intf);
296 mutex_unlock(&intf->mutex);
299 gb_interface_put(intf);
304 mutex_lock(&intf->mutex);
305 intf->mode_switch = false;
306 gb_interface_deactivate(intf);
307 mutex_unlock(&intf->mutex);
309 gb_interface_put(intf);
312 int gb_interface_request_mode_switch(struct gb_interface *intf)
316 mutex_lock(&intf->mutex);
317 if (intf->mode_switch) {
322 intf->mode_switch = true;
323 reinit_completion(&intf->mode_switch_completion);
326 * Get a reference to the interface device, which will be put once the
327 * mode switch is complete.
329 get_device(&intf->dev);
331 if (!queue_work(system_long_wq, &intf->mode_switch_work)) {
332 put_device(&intf->dev);
338 mutex_unlock(&intf->mutex);
342 EXPORT_SYMBOL_GPL(gb_interface_request_mode_switch);
345 * T_TstSrcIncrement is written by the module on ES2 as a stand-in for the
346 * init-status attribute DME_TOSHIBA_INIT_STATUS. The AP needs to read and
347 * clear it after reading a non-zero value from it.
349 * FIXME: This is module-hardware dependent and needs to be extended for every
350 * type of module we want to support.
352 static int gb_interface_read_and_clear_init_status(struct gb_interface *intf)
354 struct gb_host_device *hd = intf->hd;
355 unsigned long bootrom_quirks;
362 * ES2 bridges use T_TstSrcIncrement for the init status.
364 * FIXME: Remove ES2 support
366 if (intf->quirks & GB_INTERFACE_QUIRK_NO_INIT_STATUS)
367 attr = DME_T_TST_SRC_INCREMENT;
369 attr = DME_TOSHIBA_ARA_INIT_STATUS;
371 ret = gb_svc_dme_peer_get(hd->svc, intf->interface_id, attr,
372 DME_SELECTOR_INDEX_NULL, &value);
377 * A nonzero init status indicates the module has finished
381 dev_err(&intf->dev, "invalid init status\n");
386 * Extract the init status.
388 * For ES2: We need to check lowest 8 bits of 'value'.
389 * For ES3: We need to check highest 8 bits out of 32 of 'value'.
391 * FIXME: Remove ES2 support
393 if (intf->quirks & GB_INTERFACE_QUIRK_NO_INIT_STATUS)
394 init_status = value & 0xff;
396 init_status = value >> 24;
399 * Check if the interface is executing the quirky ES3 bootrom that,
400 * for example, requires E2EFC, CSD and CSV to be disabled.
402 bootrom_quirks = GB_INTERFACE_QUIRK_NO_CPORT_FEATURES |
403 GB_INTERFACE_QUIRK_FORCED_DISABLE |
404 GB_INTERFACE_QUIRK_LEGACY_MODE_SWITCH;
405 switch (init_status) {
406 case GB_INIT_BOOTROM_UNIPRO_BOOT_STARTED:
407 case GB_INIT_BOOTROM_FALLBACK_UNIPRO_BOOT_STARTED:
408 intf->quirks |= bootrom_quirks;
411 intf->quirks &= ~bootrom_quirks;
414 /* Clear the init status. */
415 return gb_svc_dme_peer_set(hd->svc, intf->interface_id, attr,
416 DME_SELECTOR_INDEX_NULL, 0);
419 /* interface sysfs attributes */
420 #define gb_interface_attr(field, type) \
421 static ssize_t field##_show(struct device *dev, \
422 struct device_attribute *attr, \
425 struct gb_interface *intf = to_gb_interface(dev); \
426 return scnprintf(buf, PAGE_SIZE, type"\n", intf->field); \
428 static DEVICE_ATTR_RO(field)
430 gb_interface_attr(ddbl1_manufacturer_id, "0x%08x");
431 gb_interface_attr(ddbl1_product_id, "0x%08x");
432 gb_interface_attr(interface_id, "%u");
433 gb_interface_attr(vendor_id, "0x%08x");
434 gb_interface_attr(product_id, "0x%08x");
435 gb_interface_attr(serial_number, "0x%016llx");
437 static ssize_t voltage_now_show(struct device *dev,
438 struct device_attribute *attr, char *buf)
440 struct gb_interface *intf = to_gb_interface(dev);
444 ret = gb_svc_pwrmon_intf_sample_get(intf->hd->svc, intf->interface_id,
445 GB_SVC_PWRMON_TYPE_VOL,
448 dev_err(&intf->dev, "failed to get voltage sample (%d)\n", ret);
452 return sprintf(buf, "%u\n", measurement);
454 static DEVICE_ATTR_RO(voltage_now);
456 static ssize_t current_now_show(struct device *dev,
457 struct device_attribute *attr, char *buf)
459 struct gb_interface *intf = to_gb_interface(dev);
463 ret = gb_svc_pwrmon_intf_sample_get(intf->hd->svc, intf->interface_id,
464 GB_SVC_PWRMON_TYPE_CURR,
467 dev_err(&intf->dev, "failed to get current sample (%d)\n", ret);
471 return sprintf(buf, "%u\n", measurement);
473 static DEVICE_ATTR_RO(current_now);
475 static ssize_t power_now_show(struct device *dev,
476 struct device_attribute *attr, char *buf)
478 struct gb_interface *intf = to_gb_interface(dev);
482 ret = gb_svc_pwrmon_intf_sample_get(intf->hd->svc, intf->interface_id,
483 GB_SVC_PWRMON_TYPE_PWR,
486 dev_err(&intf->dev, "failed to get power sample (%d)\n", ret);
490 return sprintf(buf, "%u\n", measurement);
492 static DEVICE_ATTR_RO(power_now);
494 static struct attribute *interface_attrs[] = {
495 &dev_attr_ddbl1_manufacturer_id.attr,
496 &dev_attr_ddbl1_product_id.attr,
497 &dev_attr_interface_id.attr,
498 &dev_attr_vendor_id.attr,
499 &dev_attr_product_id.attr,
500 &dev_attr_serial_number.attr,
501 &dev_attr_voltage_now.attr,
502 &dev_attr_current_now.attr,
503 &dev_attr_power_now.attr,
506 ATTRIBUTE_GROUPS(interface);
508 static void gb_interface_release(struct device *dev)
510 struct gb_interface *intf = to_gb_interface(dev);
512 trace_gb_interface_release(intf);
517 #ifdef CONFIG_PM_RUNTIME
518 static int gb_interface_suspend(struct device *dev)
520 struct gb_interface *intf = to_gb_interface(dev);
521 int ret, timesync_ret;
523 ret = gb_control_interface_suspend_prepare(intf->control);
527 gb_timesync_interface_remove(intf);
529 ret = gb_control_suspend(intf->control);
531 goto err_hibernate_abort;
533 ret = gb_interface_hibernate_link(intf);
537 /* Delay to allow interface to enter standby before disabling refclk */
538 msleep(GB_INTERFACE_SUSPEND_HIBERNATE_DELAY_MS);
540 ret = gb_interface_refclk_set(intf, false);
547 gb_control_interface_hibernate_abort(intf->control);
549 timesync_ret = gb_timesync_interface_add(intf);
551 dev_err(dev, "failed to add to timesync: %d\n", timesync_ret);
558 static int gb_interface_resume(struct device *dev)
560 struct gb_interface *intf = to_gb_interface(dev);
561 struct gb_svc *svc = intf->hd->svc;
564 ret = gb_interface_refclk_set(intf, true);
568 ret = gb_svc_intf_resume(svc, intf->interface_id);
572 ret = gb_control_resume(intf->control);
576 ret = gb_timesync_interface_add(intf);
578 dev_err(dev, "failed to add to timesync: %d\n", ret);
582 ret = gb_timesync_schedule_synchronous(intf);
584 dev_err(dev, "failed to synchronize FrameTime: %d\n", ret);
591 static int gb_interface_runtime_idle(struct device *dev)
593 pm_runtime_mark_last_busy(dev);
594 pm_request_autosuspend(dev);
600 static const struct dev_pm_ops gb_interface_pm_ops = {
601 SET_RUNTIME_PM_OPS(gb_interface_suspend, gb_interface_resume,
602 gb_interface_runtime_idle)
605 struct device_type greybus_interface_type = {
606 .name = "greybus_interface",
607 .release = gb_interface_release,
608 .pm = &gb_interface_pm_ops,
612 * A Greybus module represents a user-replaceable component on an Ara
613 * phone. An interface is the physical connection on that module. A
614 * module may have more than one interface.
616 * Create a gb_interface structure to represent a discovered interface.
617 * The position of interface within the Endo is encoded in "interface_id"
620 * Returns a pointer to the new interfce or a null pointer if a
621 * failure occurs due to memory exhaustion.
623 struct gb_interface *gb_interface_create(struct gb_module *module,
626 struct gb_host_device *hd = module->hd;
627 struct gb_interface *intf;
629 intf = kzalloc(sizeof(*intf), GFP_KERNEL);
633 intf->hd = hd; /* XXX refcount? */
634 intf->module = module;
635 intf->interface_id = interface_id;
636 INIT_LIST_HEAD(&intf->bundles);
637 INIT_LIST_HEAD(&intf->manifest_descs);
638 mutex_init(&intf->mutex);
639 INIT_WORK(&intf->mode_switch_work, gb_interface_mode_switch_work);
640 init_completion(&intf->mode_switch_completion);
642 /* Invalid device id to start with */
643 intf->device_id = GB_INTERFACE_DEVICE_ID_BAD;
645 intf->dev.parent = &module->dev;
646 intf->dev.bus = &greybus_bus_type;
647 intf->dev.type = &greybus_interface_type;
648 intf->dev.groups = interface_groups;
649 intf->dev.dma_mask = module->dev.dma_mask;
650 device_initialize(&intf->dev);
651 dev_set_name(&intf->dev, "%s.%u", dev_name(&module->dev),
654 pm_runtime_set_autosuspend_delay(&intf->dev,
655 GB_INTERFACE_AUTOSUSPEND_MS);
657 trace_gb_interface_create(intf);
662 static int gb_interface_vsys_set(struct gb_interface *intf, bool enable)
664 struct gb_svc *svc = intf->hd->svc;
667 dev_dbg(&intf->dev, "%s - %d\n", __func__, enable);
669 ret = gb_svc_intf_vsys_set(svc, intf->interface_id, enable);
671 dev_err(&intf->dev, "failed to set v_sys: %d\n", ret);
678 static int gb_interface_refclk_set(struct gb_interface *intf, bool enable)
680 struct gb_svc *svc = intf->hd->svc;
683 dev_dbg(&intf->dev, "%s - %d\n", __func__, enable);
685 ret = gb_svc_intf_refclk_set(svc, intf->interface_id, enable);
687 dev_err(&intf->dev, "failed to set refclk: %d\n", ret);
694 static int gb_interface_unipro_set(struct gb_interface *intf, bool enable)
696 struct gb_svc *svc = intf->hd->svc;
699 dev_dbg(&intf->dev, "%s - %d\n", __func__, enable);
701 ret = gb_svc_intf_unipro_set(svc, intf->interface_id, enable);
703 dev_err(&intf->dev, "failed to set UniPro: %d\n", ret);
710 static int gb_interface_activate_operation(struct gb_interface *intf)
712 struct gb_svc *svc = intf->hd->svc;
716 dev_dbg(&intf->dev, "%s\n", __func__);
718 ret = gb_svc_intf_activate(svc, intf->interface_id, &type);
720 dev_err(&intf->dev, "failed to activate: %d\n", ret);
725 case GB_SVC_INTF_TYPE_DUMMY:
726 dev_info(&intf->dev, "dummy interface detected\n");
727 /* FIXME: handle as an error for now */
729 case GB_SVC_INTF_TYPE_UNIPRO:
730 dev_err(&intf->dev, "interface type UniPro not supported\n");
731 /* FIXME: check if this is a Toshiba bridge before retrying? */
733 case GB_SVC_INTF_TYPE_GREYBUS:
736 dev_err(&intf->dev, "unknown interface type: %u\n", type);
743 static int gb_interface_hibernate_link(struct gb_interface *intf)
745 struct gb_svc *svc = intf->hd->svc;
747 return gb_svc_intf_set_power_mode_hibernate(svc, intf->interface_id);
751 * Activate an interface.
753 * Locking: Caller holds the interface mutex.
755 int gb_interface_activate(struct gb_interface *intf)
762 ret = gb_interface_vsys_set(intf, true);
766 ret = gb_interface_refclk_set(intf, true);
768 goto err_vsys_disable;
770 ret = gb_interface_unipro_set(intf, true);
772 goto err_refclk_disable;
774 ret = gb_interface_activate_operation(intf);
776 goto err_unipro_disable;
778 ret = gb_interface_read_dme(intf);
780 goto err_hibernate_link;
782 ret = gb_interface_route_create(intf);
784 goto err_hibernate_link;
788 trace_gb_interface_activate(intf);
793 gb_interface_hibernate_link(intf);
795 gb_interface_unipro_set(intf, false);
797 gb_interface_refclk_set(intf, false);
799 gb_interface_vsys_set(intf, false);
805 * Deactivate an interface.
807 * Locking: Caller holds the interface mutex.
809 void gb_interface_deactivate(struct gb_interface *intf)
814 trace_gb_interface_deactivate(intf);
816 /* Abort any ongoing mode switch. */
817 if (intf->mode_switch)
818 complete(&intf->mode_switch_completion);
820 gb_interface_route_destroy(intf);
821 gb_interface_hibernate_link(intf);
822 gb_interface_unipro_set(intf, false);
823 gb_interface_refclk_set(intf, false);
824 gb_interface_vsys_set(intf, false);
826 intf->active = false;
830 * Enable an interface by enabling its control connection, fetching the
831 * manifest and other information over it, and finally registering its child
834 * Locking: Caller holds the interface mutex.
836 int gb_interface_enable(struct gb_interface *intf)
838 struct gb_control *control;
839 struct gb_bundle *bundle, *tmp;
843 ret = gb_interface_read_and_clear_init_status(intf);
845 dev_err(&intf->dev, "failed to clear init status: %d\n", ret);
849 /* Establish control connection */
850 control = gb_control_create(intf);
851 if (IS_ERR(control)) {
852 dev_err(&intf->dev, "failed to create control device: %ld\n",
854 return PTR_ERR(control);
856 intf->control = control;
858 ret = gb_control_enable(intf->control);
860 goto err_put_control;
862 /* Get manifest size using control protocol on CPort */
863 size = gb_control_get_manifest_size_operation(intf);
865 dev_err(&intf->dev, "failed to get manifest size: %d\n", size);
872 goto err_disable_control;
875 manifest = kmalloc(size, GFP_KERNEL);
878 goto err_disable_control;
881 /* Get manifest using control protocol on CPort */
882 ret = gb_control_get_manifest_operation(intf, manifest, size);
884 dev_err(&intf->dev, "failed to get manifest: %d\n", ret);
885 goto err_free_manifest;
889 * Parse the manifest and build up our data structures representing
892 if (!gb_manifest_parse(intf, manifest, size)) {
893 dev_err(&intf->dev, "failed to parse manifest\n");
895 goto err_destroy_bundles;
898 ret = gb_control_get_bundle_versions(intf->control);
900 goto err_destroy_bundles;
902 /* Register the control device and any bundles */
903 ret = gb_control_add(intf->control);
905 goto err_destroy_bundles;
907 ret = gb_timesync_interface_add(intf);
909 dev_err(&intf->dev, "failed to add to timesync: %d\n", ret);
910 goto err_destroy_bundles;
913 pm_runtime_use_autosuspend(&intf->dev);
914 pm_runtime_get_noresume(&intf->dev);
915 pm_runtime_set_active(&intf->dev);
916 pm_runtime_enable(&intf->dev);
918 list_for_each_entry_safe_reverse(bundle, tmp, &intf->bundles, links) {
919 ret = gb_bundle_add(bundle);
921 gb_bundle_destroy(bundle);
928 intf->enabled = true;
930 pm_runtime_put(&intf->dev);
932 trace_gb_interface_enable(intf);
937 list_for_each_entry_safe(bundle, tmp, &intf->bundles, links)
938 gb_bundle_destroy(bundle);
942 gb_control_disable(intf->control);
944 gb_control_put(intf->control);
945 intf->control = NULL;
951 * Disable an interface and destroy its bundles.
953 * Locking: Caller holds the interface mutex.
955 void gb_interface_disable(struct gb_interface *intf)
957 struct gb_bundle *bundle;
958 struct gb_bundle *next;
963 trace_gb_interface_disable(intf);
965 pm_runtime_get_sync(&intf->dev);
967 /* Set disconnected flag to avoid I/O during connection tear down. */
968 if (intf->quirks & GB_INTERFACE_QUIRK_FORCED_DISABLE)
969 intf->disconnected = true;
971 list_for_each_entry_safe(bundle, next, &intf->bundles, links)
972 gb_bundle_destroy(bundle);
974 if (!intf->mode_switch && !intf->disconnected)
975 gb_control_interface_deactivate_prepare(intf->control);
977 gb_timesync_interface_remove(intf);
978 gb_control_del(intf->control);
979 gb_control_disable(intf->control);
980 gb_control_put(intf->control);
981 intf->control = NULL;
983 intf->enabled = false;
985 pm_runtime_disable(&intf->dev);
986 pm_runtime_set_suspended(&intf->dev);
987 pm_runtime_dont_use_autosuspend(&intf->dev);
988 pm_runtime_put_noidle(&intf->dev);
991 /* Enable TimeSync on an Interface control connection. */
992 int gb_interface_timesync_enable(struct gb_interface *intf, u8 count,
993 u64 frame_time, u32 strobe_delay, u32 refclk)
995 return gb_control_timesync_enable(intf->control, count,
996 frame_time, strobe_delay,
1000 /* Disable TimeSync on an Interface control connection. */
1001 int gb_interface_timesync_disable(struct gb_interface *intf)
1003 return gb_control_timesync_disable(intf->control);
1006 /* Transmit the Authoritative FrameTime via an Interface control connection. */
1007 int gb_interface_timesync_authoritative(struct gb_interface *intf,
1010 return gb_control_timesync_authoritative(intf->control,
1014 /* Register an interface. */
1015 int gb_interface_add(struct gb_interface *intf)
1019 ret = device_add(&intf->dev);
1021 dev_err(&intf->dev, "failed to register interface: %d\n", ret);
1025 trace_gb_interface_add(intf);
1027 dev_info(&intf->dev, "Interface added: VID=0x%08x, PID=0x%08x\n",
1028 intf->vendor_id, intf->product_id);
1029 dev_info(&intf->dev, "DDBL1 Manufacturer=0x%08x, Product=0x%08x\n",
1030 intf->ddbl1_manufacturer_id, intf->ddbl1_product_id);
1035 /* Deregister an interface. */
1036 void gb_interface_del(struct gb_interface *intf)
1038 if (device_is_registered(&intf->dev)) {
1039 trace_gb_interface_del(intf);
1041 device_del(&intf->dev);
1042 dev_info(&intf->dev, "Interface removed\n");
1046 void gb_interface_put(struct gb_interface *intf)
1048 put_device(&intf->dev);